Early eighteenth-century French medicine: Setting the stage for revolution EMIL F. FREY I. Introduction: The State of the Art Seventeenth-Century. Hiding their general ignorance behind a superfluous use of Latin phraseology, medical practitioners in seventeenth-century France were more sought after for their erudition than for any competence in curing their patients. Indeed, the general outcome of the disease seems to have held less importance in the eyes of society than did the manner in which the doctor acquitted himself with his patient. Protocol became the sina qua non of the day. The medical profession as a whole was awash on a crimson tide of phlebotomy as bloodletting remained the prima facie treatment for all diseases. Labelling all scientific discoveries heretical, medical men universally shunned any practice which hinted at a modem approach. Led by Guy Patin, Dean of the Faculte de medecine, medical practitioners became increasingly loyal to the status quo. Patin was an inveterate advocate of venesection for every ailment known to mankind. The extent of his prognostic skills can be found in his correspondence: 'Inflammation of the lung is always fatal to those who have red hair' 1 • As long as the medical practice remained in the grip of Patin and his ilk, it was bound to continue to be of little help to its patients. Health, however, was the 'summum bonum and men, women, and children sought it through prayers, stars, kings, toads, and science' 2 • On the other hand, medical research continued to forge ahead. Its adherents formed a class unto themselves, however, and rarely crossed paths with the pertinacious practitioners. Knowledge in the fields of anatomy, physiology and chemistry was expanding and surgery slowly gained ground in both method and status. In 1628 an Englishman, William Harvey, made the discovery that blood circulates, but it would be many years before this breakthrough would become accepted by the Faculte de medecine. Eighteenth-Century. Appalling conditions in public sanitation and personal hygiene resulted in widespread epidemics that continued well into the eighteenthcentury. Royal bodies proved to be no more immune to the ravages of disease than did the bodies of commoners, as successive outbreaks of smallpox between 1712 and 1715 claimed the lives of three heirs to the French throne. Until 1723 the government resided in the hands of a regent, Philippe, Duke of Orleans. Upon assuming the throne at the age of2l, Louis XV, great-grandson of Louis XIV, found a country basking in general prosperity, but with a growing influence of the bourgeoisie. C/ioMedica, Vol. 17no. l,pp. 1-13 0 B.M. Israel, Amsterdam, The Netherlands - 978-90-04-41867-7 Downloaded from Brill.com11/09/2020 03:52:17PM via free access 2 Emil F. Frey In spite of the nobility, the emerging bourgeoisie sought more freedom in the conduct of their affairs, suppression of the privileges of birth and a share in the formation of laws. Their increasing desires for parity brought on the cataclysmic outburst in 1789. The French Revolution was to bring changes across the board in French society and the medical profession was not immune to such sweeping reforms. The class rivalry which culminated in the Revolution gave a great impetus to intellectual life that resulted in a rage to learn throughout the country. General scientific progress had a great impact upon medicine. Improvements in the microscope and thermometer, the rise of chemistry and biology, and the advancing knowledge of anatomy and physiology were all reflected in medical research. Scientific thought flourished, doctors and medicine did not escape its influence. Many men of culture and achievement flourished, but so did quackery, and excessive bleeding and blistering were not out of fashion ... There was still much pomposity and humbug, but medicine was evolving from a craft to an art. A lot of eponymous pills and powders date from this time 3 • There has always been a large degree of superstition associated with the medicinal properties of drugs. In pursuit of good health, mankind has swallowed, chewed, salved and rubbed with great dedication, an immense assortment of weird and wonderfully vulgar substances, each replete with testimonials to its curative powers. Many of these nostrums had their origins in medieval superstitions. Mummy, unicorn's hom, and bezoars appealed to the imagination because of their unusual character, but even the most commonplace substances might develop supposedly medicinal virtues if they had unusual or gruesome associations. Usnea was a substance of this nature. It was moss; not ordinary moss, but moss scraped from the skull of a criminal who had been hung in chains. U snea was an official drug in the pharmacopoeia until the nineteenth-century; it was carried by all apothecary shops, and the first edition of the Encyclopedia Britannica devoted a section to its curative properties 4 • Toward the middle of the eighteenth century, attempts were made to protect the consumers of such pills, powders and potions. Registration of drug content was required, prompted by the discovery that many cure-alls contained poison. Thus, early-eighteenth-century medical practice continued to be a 'somewhat barbarous affair, coming down to physic, emetic, broth, simples, poulticing, and bleeding. Most maladies were attributed to inflammation of the blood, and there were doctors who phlebotomized their patients to death' 5 • Taken as a whole, eighteenth-century French doctors did not display a preeminent amount of intelligence nor humanitarianism in the conduct of their profession. With the state of the art in such a lamentable condition, it is little wonder that medical practitioners were held up for ridicule by literary figures of the day and almost universally condemned by the intellectuals. Voltaire is supposed to have considered medicine to be both conjectural and murderous. He violently denounced the popular remedies of his day and deplored the hospital conditions 6 • - 978-90-04-41867-7 Downloaded from Brill.com11/09/2020 03:52:17PM via free access Early eighteenth-century French medicine: Setting the stage for revolution 3 II. The Doctor in Literature and Drama Doctors and medicine have been derided by literary figures from remote times onward. The doctor has always been a familiar figure in literature. According to Sir William Osler: Many details relating to the character and to the life of physicians are gleaned only from secular authors. So much of the daily life of a civilized community relates to problems of health and disease that the great writers of every age of necessity throw an important sidelight, not only on the opinions of the people on these questions, but often on the condition of special knowledge in various branches ... The satire of Moliere, malicious though it may be, has preserved for us phases of medical life in the seventeenth-century for which we scan in vain the strictly medical writings of that period 7 • Moliere. The seventeenth-century physician was criticized for 'his fees, his pompous dress in gown, wig, and conical hat, his grandiloquent speech, and his sometimes mortal mistakes' 8 • In the comedies of Moliere, the doctor becomes a vehicle for social satire and is used to personify the foibles of a whole profession. With great abandon Moliere laughs at the manners and customs of physicians of his day, but above all it is the blind respect for ancient doctrines and their obstinate refusal to accept modem medical discoveries that provide the most meat for the playwright's knife. The pedantic and ignorant figure of seventeenth-century satire entered the eighteenth-century equally ill-equipped. The characterization, in pace with emerging middle-class values, has taken on the overtones of a fashionable fop, but as a physician he is just as impotent in the face of disease as were his seventeenthcentury ancestors. He talks and reasons endlessly. The least occurrence, the most insignificant remark, incites in him a flow of grandiloquent language, embellished with classical allusions or absurd maxims and crammed with quibbling redundancies and heavy philosophic lucubrations. The pedantic drollery of his speech is emphasized by ... the ponderous gravity with which he utters his sentences in macaronic Latin 9 • Frequently the words 'doctor' and 'assassin' were considered synonymous. Indeed, in many characterizations, the physicians are strongly convinced that all the ills of the body reside in the blood and in order to get to the bottom of a malady, they eagerly drain their patients' blood to the last drop! Le Sage. Inheritor of Moliere's satirical scalpel was Alain Rene Le Sage. Educated at a Jesuit college in Brittany, Le Sage continued to study law in Paris. Drawn to the literary salons of the city, he soon abandoned his legal career and devoted himself instead to literature and the theater. In association with the popular Theatre de la Foire, he wrote more than 100 comedies ridiculing the - 978-90-04-41867-7 Downloaded from Brill.com11/09/2020 03:52:17PM via free access 4 Emil F. Frey transgressions of Parisian society. But it is for his Histoire de Gil Bias de San til lane that LeSage is best known today. Much praised by literary historians as the first 'picaresque' novel, 'Gil Bias' contains many vivid caricatures of eighteenth-century French physicians. Although several doctors appear throughout the novel, it is upon the character of Dr. Sangrado that Le Sage concentrates his venom. Set in Spain, 'Gil Bias' relates the adventures and education of a clever young valet as he progresses from one master to another, always surpassing the skill of his employer, be it amatory or medical. Although LeSage set his novel in Spain, it is the French society that bears the brunt of his caustic pen. Dr. Sangrado (Spanish for phlebotomist) indoctrinates Gil Bias with the finer aspects of medical practice, his one remedy for all maladies being the forced drinking of water interspersed with frequent bleedings. His apprentice becomes so adept that Sangrado limits his own practice to the nobility and clergy, leaving the baser born among his patients to the ministries of Gil Bias. During an epidemic both physician and valet compile an identical record: 100 percent fatalities. Character names were as important to Le Sage as they had been to Moliere. Besides Sangrado, Gil Bias encounters Dr. Cuchillo (Spanish for knife). Dr. Trousse-Galant (French for sure death) appears in Le Sage's comedy La Tontine. Trousse-Galant was also an inveterate phlebotomist who thought it a criminal offense to question the recommended remedies. As long as proper protocol has been observed, a mere death concerns him little: 'A good doctor always goes on in the old way and never resorts to methods that shock the established principles' 10 . Le Sage took advantage of every opportunity to ridicule the medical practitioners of his acquaintance. In La Foire des fees he writes the following lines for Milloni: 'the doctors deserted their patients--and the, patients got well' 11 • LeSage also anticipated the feminist movement oflater centuries. In The W or I d Turned Upside Down he created a totally unknown creature of the eighteenth-century: a woman doctor! Women served as midwives but it was totally unthinkable that one should venture into the all-masculine realm of the Faculte de medecine! Although Le Sage tended to populate his comedies with many vitriolic caricatures of doctors, it is the emaciated Dr. Sangrado that commands the most attention. The good doctor's medical philosophy consists of two salient points: bleeding and purging. This is abundantly evident in Sangrado's instructions to Gil Bias, upon taking him as an apprentice: Without more ado, I will initiate you in the healing art, of which I have for so many years been at the head. Other physicians make the science to consist of various unintelligible branches; but I will shorten the road for you, and dispense with the drudgery of studying natural philosophy, pharmacy, botany, and anatomy. Remember, my friend, that bleeding and drinking warm water are the two - 978-90-04-41867-7 Downloaded from Brill.com11/09/2020 03:52:17PM via free access Early eighteenth-century French medicine: Setting the stage for revolution 5 grand principles; the true secret of curing all the distempers incident to humanity ... Here you have the sum total of my philosophy; you are thoroughly bottomed in medicine, and may rise yourself to the summit of fame on the shoulders of my long experience". Armed with such profound expertise, Gil Bias proceeded to hang out his shingle! Indeed, Gil Bias's first encounter with Sangrado sheds light on the medical methods used by the physician. Learning of the patients' dietary practices which consisted of nothing more frivolous than soup and gravy the doctor was aghast: Soups and gravy! exclaimed the petrified doctor. Upon my word, it is no wonder you are ill... We must have done with pampering our appetites: the more insipid, the more wholesome. The human blood is not a gravy! Why, then, you must give it such a nourishment as will assimilate with the particle of which it is composed 13 • Treatment then began; the actual bleeding itself, however, being more mechanical in nature, was vouchsafed to the hands of an assistant. Sangrado then sent me for a surgeon of his own choosing, and took from him six good porringers of blood, by way of a beginning ... He then said to the surgeon ... you will take as much more three hours hence and tomorrow you will repeat the operation. It is a mere vulgar error, that the blood is of any use in the system; the faster you draw it off, the better ... When the doctor had ordered these frequent and copious bleedings, he added a drench of warm water at very short intervals, maintaining that water in sufficient quantities was the grand secret in the materia medica. He then took his leave .... We set on the kettles in a hurry; and, as the physician had desired us above all things to give him enough, we began by pouring down two to three pints at as many gulps. An hour after, we beset him again: then returning to the attack time after time, we fairly poured a deluge into his poor stomach. The surgeon, on the other hand, taking out the blood as we put in the water, we reduced the old canon to death's door in less than two days 14 • These methods appear fairly typical of the eighteenth-century physician. The fact that they are not unduly exaggerated may be found by comparing the above scene to actual instructions from a barber-surgeon's manual in use in Venice in the late seventeenth-century. Two veins in the hand are used for bleeding, one of which descending from the cephalic vein passes to a point between the thumb and index finger. .. The other is commonly called the salvatelle ... which ends between the little finger and the ring finger. The first vein, coming down from the head, should be opened only where the cephalic vein joins the trunk vein, or at the elbow; or in case of aversion such as I have observed in angina, before letting blood from the hand as already mentioned and then under the tongue both for drawing off matter from the head and for treating ailments of the mouth or face, or for the physician's other purposes ... This incision can be made either in the right or left hand. The second vein, as the salvatelle, is concerned in the left hand with affections of the spleen, and in the right hand with affections of the liver. .. But to bleed this vein well it is essential first for the attending barber to prepare hot water in which the patient's hand is placed so that the heat swells it and the vein becomes more prominent. .. After making the incision the hand is again dipped in hot water so that blood will flow more freely instead of slowly ... When sufficient blood has been drawn off the wound is bound up (in a manner to - 978-90-04-41867-7 Downloaded from Brill.com11/09/2020 03:52:17PM via free access 6 Emil F. Frey allow) that the coarse, impure blood which is putrefied and infected can escape while coarse and impure blood retained at the opening will prevent escape of the fine healthy blood, which would debilitate the patient, aggravate his illness and corrupt his humors, his health returning unless he suffers a prolonged illness or dies ' 5 . There were a few doctors who disagreed with the standing therapy of bloodletting. Le Sage was not unawar.e of their existence and recognized them in the character of Dr. Cuchillo. Gil Blas, now practicing the healing arts himself, encounters Dr. Cuchillo and the two cannot agree upon a program of therapy. Thereupon the little pulse-counter set himself about reviewing the patient's situation; and after having dilated to me on all the symptoms, asked me what I thought of the fittest method of treatment. I am of the opinion, replied I, that he should be bled once a day, and drink as much warm water as he can swallow. At these words, our diminutive doctor said to me, with a malicious simper,--And so you think such a course will save the patient? Never doubt it, exclaimed I, ... it must produce that effect. because it is a certain method of cure for all distempers ... I discover by your language, said Cuchillo, the safe and sure method of practice Doctor Sangrado instills into his pupils. Bleeding and drenching are the extent of his resources. No wonder so many worthy people are cut off under his direction ... who, with all his arrogance and affectation is but a ninny! 16 The doctors of the time, wrapped up in their long cloaks of dogma, took themselves quite seriously. According to Ray and Max Kahn, 'They hotly resented any infringement of their prerogatives. They chafed under criticism and were furious, indeed, at those who ridiculed them. Better than most people, they knew that their dignity hip a mass of ignorance, and that the impression they produced was due to their flowing gowns and their pseudo-Latin jargon' 17 • Before leaving 'Gil Blas', it is important to note that even the most perspicacious valet is not immune from sickness, as Gil Blas himself became ill and sent for a doctor. The doctor came up to my bedside, felt my pulse, looked in my face, and, discovering undeniable symptoms of approaching convalescence, assumed an air of triumph, as if it was all his handiwork, and said there was nothing wanting but to keep the bowels open, and he flattered himself he might boast of having performed an extraordinary cure. Speaking after this manner, he dictated a prescription to the apothecary, looking in the glass all the time, adjusting the dress of his hair, and twisting his visage into shapes which set me laughing in spite of my debility. At length he took his leave with a slight inclination of the head, and went his way, more taken with the contemplation of his own pretty person, than anxious about the success of his remedies 18 • Beaumarchais. Continuing in much the same vein as LeSage, de Beaumarchais created the 'valet extraordinaire', Figaro, in two comedies written in the latter half of the eighteenth-century: The Barber of Seville and The Marriage of Figaro. The operas based on these productions have surpassed their originals in popularity. In both comedies a key character is Dr. Bartholo who has his roots in the caustic characterizations of both Moliere and LeSage. Bartholomay be drawn with a kinder pen but the addlepated doctor is still just as helpless in the face of - 978-90-04-41867-7 Downloaded from Brill.com11/09/2020 03:52:17PM via free access Early eighteenth-century French medicine: Setting the stage for revolution 7 disease as were his predecessors. Dr. Bartholo, however, is the last of his kind. As the doctors themselves began to change, their literary portraits evolved with them and showed a more humanitarian approach to characterization. III. The Evolution of Medical Training The doctors were only as good as their training allowed them to be. While scientific discoveries were advancing, the medical schools of the time took little note of such progress. Although a degree from a recognized institution was generally required for the legal practice of medicine in the early eighteenth-century, the training which went into obtaining the degree bore little resemblance to medical training as we know it today. The faculties stubbornly resisted scientific discoveries, choosing instead to perpetuate the ideology of Galen and Hippocrates. Surgeons continued to be thought of as mere menials by the Faculte de medecine and not fit for their privileged company. Therefore, surgeons established their own schools, the chief among them being Saint Come in Paris. With such a universal acceptance of bleeding as the sole treatment for all diseases, apprentices had to be trained in the unlikely art. Equipped with training manuals such as the one discussed earlier, the students practiced their phlebotomatic skills on volunteers who made the rounds of the surgical schools, offering to open their veins for a little financial remuneration. The education of medical students slowly began to improve, but even so, the faculties at the recognized institutions were limited to only a few professors. 'Each teacher collected fees for his own course, and issued tickets of admission, sometimes on the backs of playing cards. Certain hospitals now began to teach clinical medicine' 19 • Prior to the seventeenth-century, there was no systematic clinical teaching. The universities bestowed degrees on the basis of a spoken disputation. There was virtually no contact with patients during the course of instruction. The University of Leyden in Holland established clinical teaching in the 1630s. Hermann Boerhaave, appointed to the faculty at Leyden in 1701, became the first great clinical teacher. His methods slowly found their way into the French universities. N. Surgery Becomes Socially Acceptable Seventeenth-Century. Surgery struggled throughout the seventeenth-century for recognition as a reputable profession. Practitioners found themselves caught by the hostility of the physicians and the envy of the barbers who, while under the control of the Faculte de medecine, still performed some minor operations. Surgeons frequently had trouble separating their art from that of the common barber, who, 'deft at wielding the razor, could serve for the ordinary task of opening a vein or boil, and who could, on occasion, presume to essay major operations, such pre- - 978-90-04-41867-7 Downloaded from Brill.com11/09/2020 03:52:17PM via free access 8 Emil F. Frey sumptions being limited only by the willingness of certain feudal lords to resort to the gallows in rewarding unsuccessful operations' 20 • In 1657 the barber-surgeons decided to amalgamate with the surgeons at Saint Come. Such an action would remove them from the control of the Faculte de medecine and at the same time strengthen the hands of the surgeons in their quarrels with the doctors. Guy Patin was understandably not amused by this idea. In fact, the very thought of a merger between the two groups of surgeons incurred his wrath and he made his feelings abundantly clear: We are now at war with our barber-surgeons who wish to unite with the surgeons of Saint Come ... (those of Saint Come) are miserable rascals, nearly all tooth-pullers and very ignorant. .. and they would make for us, doctors ... (ignorant of Latin), who would not know even how to read or write .. . We would only have a company of barber-surgeons ... which would be dependent on our Faculte .. . and pay us every year a certain sum for the rights which we have in their functions. But we do not wish robes, bonnets, licenses, nor any similar abuses 21 • In 1660 the merger was enacted over the protests of Patin. By 1667, however, Patin had acquiesced and the one guild was placed under the authority of the Faculte de medecine. The officers of the guild were instructed to appear before the Faculte each year on the day after the feast of Saint Luke to take the customary oath. This practice continued until the Assembly abolished all faculties on 18 August 1792. The status of surgery was assured by a successful operation on Louis XIV in 1686 to remove a fistula. 'Many of the courtiers, although not suffering from any trouble of a similar nature, insisted on submitting themselves to a like operation in order to show their submissive devotion to their royal master' 22 • In recognition of his service, the surgeon received 15,000 louis d'or, a country estate, and a patent of nobility. From then on surgery became socially acceptable. Eighteenth-Century. In 1724 Louis XV granted five professorships in surgical instruction to the College of Saint Come. This was more than the Faculte was willing to accept. Decked out in their scholastic robes, the physicians, headed by the dean of the Faculty, preceded by a beadle and an usher, marched to Saint Come in solemn array, in spite of the bitter cold weather, the snow and sharp sleet, which made their red robes almost unrecognizable. Cheering one another on with great cries and oaths and followed by a great crowd of people, they at length ranged themselves in a long line against the wall, while the dean presented himself at the door of the college accompanied by the only anatomist of the Faculty, who stood behind him holding a skeleton. Cries and imprecations, knocks and threats to break down the door, were only greeted by the jeers of the students from within ... the people suddenly turned and drove the doctors away without regard for their furs and costly raiment 23 • Dentistry joined the ranks of surgery as a separate art in 1728, and in 1743 the king issued an ordinance that freed the surgeons from the guild of barbers and wigmakers. The ordinance also required a college degree as a prerequisite to surgical practice. At last surgery had come of age in France and Paris became the surgical - 978-90-04-41867-7 Downloaded from Brill.com11/09/2020 03:52:17PM via free access Early eighteenth-century French medicine: Setting the stage for revolution 9 center of the world. While Voltaire was quick to criticize doctors, he had great respect for surgery and referred to it as the most useful of all the arts. V. Making an Anatomy Two powerful prejudices were operating against the surgeons in their struggle to win parity with the physicians. One was the opposition to any type of manual labor or anything that smacked of it and the other was a feeling of revulsion against anything associated with corpses. In order for the medical arts to advance, there had to be a greater knowledge about the human anatomy. Even though courses of anatomy soon began to be taught at the universities, subjects for dissection were nearly impossible to obtain. Only the bodies of executed criminals were allowed to be dissected and the Dean of the Faculte de medecine was the sole legal owner of all such objects. Pitched street battles frequently occurred following an execution to determine who would obtain the body. The Place de Greve would swarm with students come from surgeons, barbers, and physicians ... Hardly was the breath out of the wretch's body when the scaffold was carried by storm. A hideous game of football would be played through the streets, the goal being some surgeon's shop, which when reached was instantly barricaded against the enemy 24 . Sometimes the surgeons and physicians were on speaking terms. Then, following an execution, the body of the criminal was brought to the Faculte and both surgeons and physicians took part in a 'Ceremony of Making an Anatomy'. Since manual work was beneath the dignity ofthe medical professors, the actual dissection was performed by a barber-surgeon while the professor lectured to the audience. But it soon became apparent that the barber-surgeons were better informed than their masters ofthe Faculte. Medical students continued to have difficulty obtaining subjects to study. Many dissections took place near graveyards as the students were forced to rob graves for corpses to dissect. A startling new business began to develop which caused the sentiments of the public to be even more strongly opposed to dissection. Grave-robbing finally developed into a profession and men known as "resurrectionists" made a business of supplying medical schools. This practice eventually led to murder as a means of obtaining bodies. To avoid the incentive of crime, laws were enacted in the nineteenth-century to provide medical schools with unclaimed bodies 25 • Nevertheless, anatomical studies did Improve which in tum aided the advancement of medical sciences. In Italy, Giovanni Battista Morgagni, professor of medicine at Padua, kept clinical records of all cases under his care. Numbering around 700, their publication in 1761 founded the discipline of pathological - 978-90-04-41867-7 Downloaded from Brill.com11/09/2020 03:52:17PM via free access lO Emil F. Frey anatomy. Hospitals were no longer reluctant to provide cadavers for his work and he carried on his experiments without protest from church or state. VI. Conclusions: Setting the Stage for Revolution As the eighteenth-century progressed, the medical sciences advanced slowly. Once the overwhelming influence of Guy Patin and the Faculte de mectecine began to give ground, new medical discoveries found their way into acceptance. The doctors as a whole became less pedantic and more cheerful. Efforts were made to improve public sanitation and hospital care. Phlebotomy was beginning to give ground as the major treatment. Medicine was still full of quackery and mysticism but progress was being made in the areas of anatomical research and physiology. Medical schools were becoming more thorough and unlicensed practice was fading away. In short, the early part of the eighteenth-century saw an attempt to put things in order in anticipation of a number of major medical discoveries that took place in the second half of the century. But in order for these discoveries to be accepted, public attitudes had to be changed. Perhaps the best example of the new doctor who was emerging in the early part of the eighteenth-century can be found in Theodore Tronchin. He was a student of Boerhaave at Leyden and practiced for twt:nty years in Amsterdam. In 1749, while practicing in Geneva, he introduced inoculation for smallpox to his patients which met with great success. Although inoculation had been known and practiced for many years in Eastern countries, the preventive measure was slow to gain recognition and acceptance in England and on the Continent. Invited to Paris in 1756, Tronchin inoculated the children of the Duke of Orleans. Parisians were amazed at such courage, but soon were flocking to him for inoculation against the dread disease. Tronchin's methods soon found rapid acceptance in other areas as well. He 'told his patients to take less mediCine and more exercise in the open air, to eat simple foods, to bathe more frequently, to wash in cold water, discard their wigs, nightcaps, and bed curtains, and retire and rise at an early hour. He startled the court of Versailles by ordering the windows of the palace ... to be opened at least part of every day, even in winter' 26 • Tronchin was very much the fore-runner of modem medicine. Only a few years earlier his ideas would have gained little acceptance and he would have been branded a heretic. But as medicine continued to evolve, his methods became more widely accepted. Tronchin returned to Geneva. Voltaire, during a sojourn in Geneva, placed himself under Tronchin' s care, praising him highly. Although perhaps the greatest medical achievement in early eighteenth-century France was the acceptance of surgery as a reputable branch of medicine, the practice itself was shedding much of its dogma. Comparing Tronchin with Patin, it is possible to see how far medical science had come. No longer would a Gil Bias find it possible to practice medicine without any formal training; nor would he be likely - 978-90-04-41867-7 Downloaded from Brill.com11/09/2020 03:52:17PM via free access Early eighteenth-century French medicine: Setting the stage for revolution 11 to find a Dr. Sangrado draining the last drop of blood from his patients. Although it still was practiced, phlebotomy was declining in popularity. Finally, it can be said that patients were beginning to recover with their doctor's help instead of in spite of it. NOTES I. Patin to Andre Falconet, 26 October 1658, quoted in Francis R. Packard, Guy Patin and the Medical Profession in Paris in the XVlith Century. New York, Paul B. Hoeber, 1924, p. 257. 2. Will and Ariel Durant, The Age of Louis XIV. New York, Simon and Schuster, 1963, p. 525. 3. H.S. Carter, Medicine and Literature. In: Glasgow Medica/Journal. 30, 1949,525. 4. Howard W. Haggard, Devils, Drugs, and Doctors. New York, Harper & Brothers, Publishers, 1929, p. 327. 5. Christine E. Petersen, The Doctor in French Drama 1700-1771. New York, Columbia University Press, 1938, p. 113. 6. Ibid., p. 107. 7. William Osler, Physic and Physicians as Depicted in Plato. In: Boston Medical and Surgical Journal. 128, 1893, 129. 8. Durant, The Age of Louis XIV, p. 528. 9. Petersen, The Doctor in French Drama, p. 5. I0. Alain Rene LeSage, La Tontine, comedie en un acte (sc. 3). In: Recueil des pieces mises au theatre franr;ais. Vol. I. Maestricht, n.p., 1774, p. 368. II. Alain Rene LeSage, La Foire desjees (act I, sc. 9). In: Oeuvres choisies. Vol. 14. Paris, n.p., 1783, p. 273. 12. Alain Rene Le Sage, The Adventures of Gil Bias of Santillane. Trans. Tobias Smollett, vol. I. Philadelphia, J.P. Hom and Co., 1930,pp. 101-2. 13. Ibid., p. 93. 14. Ibid., pp. 94-95. 15. Cintio d'Amato, On the Correct Method of Making Incisions in Veins of the Hand, and on Their Treatment. Trans. J .F. Smith, in: Source Book ofMedical History. Comp. Logan Clendening. New York, Dover Publications, Inc., 1960, pp. 285-87. Quoted passage is from Chapter XIX of Amato's Prattica nuova, et utilissima di tutto quello, ch' al diligente barbiero s' appartiene. Venetia, Battista Brigna, 1669. 16. LeSage, TheAdventuresofGilBlas. Vol. l,pp. 106-7. 17. Ray G. and Max Kahn, Quixotic Medicine. In: Medical Life. 33, 1926, 174. 18. LeSage, The Adventures of Gil Bias. Vol. 2, pp. 272-73. 19. Will and Ariel Durant, The Age of Voltaire. New York, Simon and Schuster, 1965, p. 592. 20. Petersen, The Doctor in French Drama, p. 57. 21. Patin to Spon, 13 July 1657, quoted in Packard, Guy Patin, pp. 242-43. 22. Ibid., p. 277. 23. Emile Forgue, Chirurgiens et Medecins. In: Montpellier Medical. 33, 1911, 10-11. 24. James William Barlow, Doctors at War. London, David Nutt, 1914, pp. 20-21. 25. Haggard, Devils, Drugs, and Doctors, p. 149. 26. Durant, The Age ofVoltaire, p. 601. - 978-90-04-41867-7 Downloaded from Brill.com11/09/2020 03:52:17PM via free access 12 Emil F. Frey Fig. 1. David de Planis Campy, Discours de laphlebotomie. Paris, 1621. Title page . - 978-90-04-41867-7 Downloaded from Brill.com11/09/2020 03:52:17PM via free access Early eighteenth-century French medicine: Setting the stage for revolution Fig. 2. Gideon Harvey, Ars curandi morbos expectatione. Amstelodami, 1695. Frontispiece. 13 Fig . 3, 4, 5 . Cintio d' Amato, Prattica nuova. Venetia, 1669. Pages 14,26, 28. - 978-90-04-41867-7 Downloaded from Brill.com11/09/2020 03:52:17PM via free access J.-M. Charcot et Paul Richer J.-M. Charcot et Paul Richer Les difformes et les malades dans l'art Les demoniaques dans l'art Reprint of the edition Paris, 1889. 4to. 87 text -illustrations (partly renewed) (VIII, 162 pp) . Cloth binding. Reprint of the edition Paris, 1887. 4to. 67 text-illustrations (partly renewed) (116 pp) . Cloth binding. ISBN 90.6078.059.0 ISBN 90.6078.060.4 Hfl90,- Hfl80,- Medicine and Art Charcot was a talented artist; he collaborated with. Richer, artist at 'La Salpetriere', the greatest clinic of his time for diseases of nervous system, in the production of interesting books on disease and deformity as portrayed by artists, books which have put the study of medicine in relation to art upon a sound footing . (Garrison & Morton nr. 660516; Semelaigne, Les Pioniers de la psychiatrie Jranfaise II, pp. 716-725 ; Garrison, Contributions pp. 82617) Both books together Hfl150,- B. M. ISRAEL BY. N .z. Voorburgwal 264 AMSTERDAM - 978-90-04-41867-7 Downloaded from Brill.com11/09/2020 03:52:17PM via free access Evolution de l'histologie du systeme nerveux au XIXe siecle; 1' impulsion donnee par Camillo Golgi ( 1844-1926)* GEORGETTE LEGEE SUMMARY Fontana had been studying the structure of nerves by method of dissociation and with the use of a microscope since the end of the XVIIIth century. The imperfect instruments, however, only permitted no more than crude observations. As regards the microscopic structure of the nerve centres, the methods which had been used by Schneider and Schwann to constitute the cell theory from 1832 and onwards, were not sufficient to reveal the existence of specific cells in the middle of a ganglion. The nerve cell became perceptible for the first time in 1847 (Remak, Helmholtz, Wagner), as a result of an improvement in the dissociation ofthe nerve substance. But the histology of the nervous system has substantially been the result of the work in the second half, and moreover the last quarter of the 19th century. The method of dissociation was improved by Deiters, while the application of thin section by Stilling made it possible to elucidate the structure of the fibre as well as the structure of the nerve cell and of the neuroglia(Ranvier). But the breakthrough was due to the method discovered by C. Golgi (1873). The use of his method permitted the establishment of the individuality of the nerve cell (Ramon y Cajal), to which Waldeyer gave the name of neurone. The letters of A. Kolliker to C. Golgi revive this period of great progress in the histology of the nervous system, but also depict the essentially humane character of C. Golgi. L' anatomie microscopique des organes du systeme nerveux est dominee par des preoccupations physiologiques. La connaissance des elements du tissu nerveux, cellules et fibres, va permettre de concevoir l'arc reflexe avec ses voies centrifuges et centripetes et ses organes centraux representes par les corps cellulaires. Les relations fonctionnelles entre la moelle epiniere et Ies differents organes de l'encephale, ainsi que les interactions entre les differents centres encephaliques necessitaient une connaissance rigoureuse des relations anatomiques entre les multiples fibrilles nerveuses et les corps cellulaires. II fallait demeler une structure qui apparaissait inextricable dans un tissu ou les premieres methodes de coloration restaient infructueuses. Vers Ia fin du l8e siecle, les premieres observations microscopiques concement essentiellement le systeme nerveux peripherique. Elles sont dues a Felix Fontana (172{}...-1805) et sont liees au probleme physiologique du retour de l'irritabilite et de la fonction d'un nerf quelque temps apres sa section. Mais il ne s'agit encore que de nerfs, c'est-a-dire de paquets de fibres non individualisees. ClioMedica, Vol. 17no. l,pp. 15-32 0 B.M. Israel, Amsterdam, The Netherlands - 978-90-04-41867-7 Downloaded from Brill.com11/09/2020 03:52:17PM via free access 16 Georgette Legee Vers Ia meme epoque Vicq d'Azyr (1748-1794) comparait des coupes macroscopiques de centres nerveux aux observations recueillies par Ia dissection de ces memes organes. Et, s'il avait recours au microscope, l'imperfection de cet instrument ne permettait pas d'obtenir des renseignements precis concernant Ia structure fine des centres nerveux 1 • Les veritables methodes histologiques vont naitre en meme temps que l'apparition du microscope achromatique, et leurs perfectionnements successifs seront lies aux progn!s de l'optique et de Ia chimie des matieres colorantes. Aussi l'Allemagne jouera-t-elle un grand role dans !'impulsion donnee aux premieres recherches. Au point de vue histologique pur nous distinguerons une premiere periode pendant laquelle s'elabore Ia connaissance des elements du tissu nerveux: Ia fibre nerveuse, Ia cellule nerveuse et ses prolongements, Ia cellule nevroglique ou araignee. Les recherches aboutissent au schema morphologique de Ia cellule nerveuse donne par O.F.K. Deiters (1834-1863). C'est alors que s'edifient des theories ou !'imagination se mele aux observations. II faudra attendre Ia seconde periode qui commencera par Ia decouverte de C. Golgi (1843-1926) pour que l'histologie du systeme nerveux prenne vraiment son essor grace a l'observation rendue possible des connexions intercellulaires. Des lors l'histologie sera capable de rendre de grands services a Ia physiologie. Premie're periode Elle est caracterisee par le perfectionnement de Ia methode des dissociations: dissociation mecanique par de fines aiguilles, et dissociation chimique par le ramollissement du tissu interstitiel formant 'ciment' entre les cellules nerveuses, sous !'action de substances chimiques. Le microscope achromatique peut alors reveler des elements de Ia substance blanche et de Ia substance grise. C'est ainsi qu 'en 1833 C. G. Ehrenberg ( 1795-1876) examine des nerfs dissocies et decouvre Ia fibre a myeline. En 1847 R. Remak (1815-1865), A. Hannover (1814-1894), H. von Helmholtz (1821-1894), R. Wagner (1805-1876) etc. utilisent Ia meme methode sur les ganglions et Ia pulpe grise des centres; Ia cellule nerveuse, isolee pour Ia premiere fois, les frappe par son aspect generalement multipolaire. Au moment de cette decouverte tous les prolongements de Ia cellule semblent equivalents. Mais bientot, R. Wagner, etudiant les corpuscules geants du lobe cerebral electrique de Ia torpille observe qu 'un seul prolongement est tres long et possede Ia structure propre aux fibres nerveuses. Remak fait Ia meme observation sur les cellules multipolaires de Ia moelle epiniere et du cerveau du boeuf. Mais, c'est en 1865 que O.F.K. Deiters, grace a sa methode de dissociation par des solutions faibles de bichromate de potassium, peut generaliser, a toutes les cellules 'ganglionnaires', eta tousles vertebres, Ia dualite anatomique et fonctionnelle des prolongements cellulaires. Toute cellule nerveuse multipolaire possede done deux sortes de prolongements: - 978-90-04-41867-7 Downloaded from Brill.com11/09/2020 03:52:17PM via free access Evolution de l' histologie du systeme nerveux au XIXe siecle 17 l. un prolongement fin, lisse, non ramifie, se continuant par un tube nerveux; c'est 'le cylindre de !'axe' (Achsencylinderlortsatz); 2. des prolongements multiples, courts, epais, acontours raboteux, tres ramifies, qu'il appelle protoplasmiques. Deiters decouvre aussi Ia cellule nevroglique qui ne possede pas de 'cylindre de I' axe'. Les histologistes qui suivront, me me quand ils traiteront Ia substance grise de vertebres tres divers par des procedes plus delicats de dissociation ou par Ia methode plus parlaite des coupes fines et transparentes due aRolando (1773-1831) et Stilling (1810-1879) auront fort peu a ajouter au schema morphologique de Ia cellule nerveuse, tel qu'il est dessine par Deiters. Tels seront les cas de: J. Henle (1809-1885), A. von Kolliker (1817-1905), J. von Gerlach (1820-1896), Max Schultze (1825-1874), Th. Meynert (1833-1892), L. Ranvier (1835-1922), G.A. Schwalbe (1844-1916), etc ... Les travaux de Deiters ouvrirent Ia voie a des hypotheses gratuites. Lui meme admit comme une possibilite, que des fibres fines pouvaient naitre du contour des prolongements protoplasmiques. Cette idee incita Gerlach a concevoir sa theorie des reseaux, theorie erronee qui allait exercer une influence nefaste sur Ia direction des recherches anatomiques. Elle etait ainsi con~;ue: les prolongements protoplasmiques se resolvent en un reseau de mailles sern!es comprenant les corps cellulaires de Ia substance grise; les travees du reseau se n!unissent a nouveau pour former des fibres de Ia substance blanche se continuant avec les tubes nerveux. Les tubes nerveux ont done une double origine: l'une directe, Ia cellule nerveuse, et !'autre indirecte, le reseau protoplasmique interstitiel. Cette theorie recueillit de nombreux adeptes. Mais ni Max Schultze, ni Henle n'avaient observe les pretendues anastomoses de Gerlach; ils ne se laisserent pas aveugler. Une autre theorie, aussi fausse et basee sur une illusion d'optique plus grossiere, fut celle de E. Harless ( 1820-1862) qui pretendait a voir observe le cylindre-axe des grandes cellules du lobe electrique de Ia torpille sortir du noyau. Et cette theorie eut aussi ses adeptes, tant il est vrai que 'Moins les methodes de travail et d'analyse soot peiiectionnees, plus sont puissantes et nombreuses les theories.' Deuxieme periode L'apparition de ces theories repondait a un besoin d'explication que meme les methodes des coupes minces, qui se perlectionnaient, etaient incapables de foumir. Excitabilite, conductibilite etaient des proprietes essentielles du systeme nerveux que Ia physiologie experimentale mettait en evidence avec de plus en plus de precision. II etait necessaire pour etablir le pont entre physiologie et histologie de savoir exactement comment prenaient naissance les axones essentiellement conducteurs, comment leurs arborisations terminales entraient en relation avec les cellules nerveuses voisines, que! role jouaient les prolongements protoplasmiques (role trophique ou conducteur d'influx). II fallait mettre en evidence les connexions - 978-90-04-41867-7 Downloaded from Brill.com11/09/2020 03:52:17PM via free access 18 Georgette Legee microscopiques qui permettaient le passage des influx sensitifs et moteurs. Ce fut Camillo Golgi qui, en 1873, decouvrit Ia methode qui allaitjeter une vive lumiere sur ces differents problemes. Cette decouverte spectaculaire frappa tous les esprits. S. Ramon y Cajal (1852-1934) se plait a Ia rapporter: Un marceau de tissu nerveux trainait de puis quelques jours, durcissant dans du liquide de Muller pur ou melange d'acide osmique. Distraction d'histologiste ou curiosite de savant, le voila immerge dans un bain de nitrate d'argent. Les aiguilles rutilantes, aux reflets chatoyants d'or, attirent aussitot l'attention. On le sectionne, on deshydrate ces coupes, on les eclaircit, on les regarde. Spectacle inattendu! Sur un fondjaune d'une translucidite parfaite, apparaissent, clairsemes, des filaments noirs, lisses et minces, ou epineux et epais, des corps noirs, triangulaires, etoiles, fusiformes! On dirait des dessins ii /'encre de Chine sur un papier transparent du Japon. L'oeil, habitue aux inextricables lacis des coupes au carmin eta l'hematoxyline ou I' esprits· efforce en des prodiges de critique et d'interpretation toujours en suspens, est deconcerte. lei, tout est simple, clair sans confusion. II n'y a plus a interpreter, il n'y a qu'a voir et constater cette cellule aux multiples branches, rameuses, couvertes de givre, embrassant de leur ondulations un espace etonnamment grand; cette fibre lisse et egale qui nee de Ia cellule, s'en eloigne a des distances enormes, et, tout a coup, s'epanouit en une gerbe d'innombrables fibres bourgeonnantes; ce corpuscule confine a Ia surface d'un ventricule, d'ou il envoie une tige se ramifier jusqu'a Ia surface de l'organe; d'autres cellules etoilees, comme des comatules ou des phalangides. Emerveille, l'oeil ne peut se detacher de cette contemplation. Le reve technique est realise! L'impregnation metallique a fait cette dissection fine, inesperee. C'est Ia methode de Golgi. Elle porte le nom du savant professeur de l'Universite de Pavie, qui, le premier, en 1873, Ia publia 2 • Cette reaction exclusive du nitrate d'argent sur le bichromate de potassium au sein des cellules nerveuses rendait !'analyse anatomique facile et source dejoie, et Golgi peut rapidement completer le schema morphologique de ces cellules. II ecrit: I. Les expansions protoplasmiques se terminent par des extremites libres. 2. Toute cellule nerveuse possede un cylindre-axe qui, pendant son trajet, emet des fibrilles collaterales ramifiees coup sur coup. 3. L'anatomie du cylindre-axe permet de distinguer deux types de cellules nerveuses: le premier type pourvu d 'un cylindre-axe qui, tout en emettant des fibrilles collaterales conserve son individualite dans Ia substance blanche ou les racines motrices de Ia moelle ou il se porte; et le second type muni d'un cylindre-axe qui perd vite son individualite, se resolvant immediatement, dans Ia substance grise ou il est ne, en une arborisation terminale. Les conformations devinrent aussitot unanimes (Ramon y Cajal, W. His (1831-1904), Kollikeretc.) En realite !'oeuvre de Golgi, comme celle de Deiters, presente deux parties: l. La methode et les faits, creations fecondes accueillies avec enthousiasme; 2. !'interpretation, toute impregnee du milieu scientifique de l'epoque ou !'influence de Gerlach etait encore puissante. Aussi Golgi admet-ill'existence d'un reseau interstitiel dans Ia substance grise. II soutient que les prolongements protoplasmiques ont un role nutritif et qu'il existe deux sortes de cellules nerveuses correspondant aux cellules sensitives et matrices. - 978-90-04-41867-7 Downloaded from Brill.com11/09/2020 03:52:17PM via free access Evolution de l'histologie du systeme nerveux au X/Xe siecle 19 La correspondance de A. von Kolliker a C. Golgi, de mai 1887 a mai 1905, reflete le climat de l'epoque et fait ressortir Ia valeur de !'oeuvre de C. Golgi. Le 3 mai 1887 Kolliker ecrit: Tres honore collegue! Permettez-moi de vous presenter mes meilleurs remerciements pour vos belles preparations du systeme nerveux. Je n'ai encorejamais vu de si belles cellules nerveuses etje vous felicite d'avoir trouve une methode qui permet de mettre en evidence leurs prolongements si clairement. Et, le 22 mai, Kolliker fait part des premiers resultats qu'il vient d'obtenir avec Ia methode de Golgi: Je vous felicite d'avoir decouvert et introduit dans Ia science, cette belle methode, qui avec celle de Weigert-' marque une nouvelle epoque dans l'anatomie microscopique du systeme nerveux central. J'ai de suite essaye votre methode sur un cerveau d'un cheval et le cervelet humain dont je possedais des pieces durcies dans le liquide de Muller' et les deux ont donne de belles preparations. Mais Kolliker adresse aussi quelques critiques: Mais vous ne me prendrez pas en mal, si tout en acceptant vos decouvertes,je ne puis etre d'accord avec vous dans toutes vos conclusions. Je suis de !'avis, que les prolongements protoplasmiques sont tous de nature nerveuse ... En sus je n'ai pu acquerir Ia conviction de !'existence de votre plexus nerveux ... Ne veuillez pas me prendre en mal, sije ne puis etre d'accord avec vous sous tous les rapports. Vos me rites dans ce departement sont si grands qu'un peu d'opposition ne peut que les faire ressortir plus encore. S. Ramon y Cajal (1852-1934) fut le premier a utiliser largement Ia methode de Golgi, ala perfectionner eta s'opposer energiquement a Ia conception d'un reseau interstitiel. II appliqua la methode de Golgi au systeme nerveux d'embryons et Kolliker loue cette initiative (lettre a Golgi du 12 mai 1890). Des 1888, Ramon y Cajal pouvait donner les conclusions suivantes: l. Qu'il s'agisse de ramifications finales de cylindres-axes, de collaterales de cylindres-axes ou de prolongements protoplasmiques, dans tous les cas ce sont toujours des branchilles lib res qui forment les terminaisons. La cellule nerve use avec tout !'ensemble de ses divisions et subdivisions constitue done une individualite absolument independante, et pour employer /'expression de Waldeyer 5 nous I' appellerons neurone. 2. Cette parfaite liberte de l'extremite terminale du cylindre-axe, nous Ia constatons aussi et avec la demiere evidence, pendant la periode embryonnaire, dans le cone de croissance. 3. Libres, les ramifications terminales ne s'unissent done point a d'autres ramifications nerveuses. Non, elles s'appliquent purement et simplement, par contact, sur le corps ou sur les expansions protoplasmiques d'autres elements cellulaires. - 978-90-04-41867-7 Downloaded from Brill.com11/09/2020 03:52:17PM via free access 20 Georgette Legee 4. Les courants nerveux, au passage d'une cellule al'autre, se transmettentdonc des fibres nerveuses de l'une au protoplasma cellulaire de l'autre. Et quoique cela soit contraire a l'opinion dominante, nous declarons que, lui aussi, ce protoplasma cellulaire, qu' il appartienne au corps ou aux prolongements dendritiques, jouit de la faculte de transporter l' ondulation nerveuse; ce n' est done point un simple appareil de nutrition 6 . 5. Les nerfs sensitifs et sensoriels ne naissent pas dans les centres. Leur origine, ainsi que His la signala naguere, est dans les cellules ganglionnaires extracentrales. Partis de la, les cylindres-axes, assembles en nerfs, arrivent aux centres et s'y bifurquent chacun en deux branches, l'une ascendante, l'autre descendante. De ces branches se detachent de nombreuses collaterales allant envelopper le corps des neurones moteurs et d'association. 6. Le cylindre-axe d'un grand nombre de cellules nerveuses centrales se bifurque de meme lorsqu'il parvient ala substance blanche, et, en certains cas, il peut aller jusqu'a donner trois tubes et plus destines a des regions blanches differentes. Grace ala methode de Golgi, originale ou modifiee en double impregnation par Ramon y Cajal, de nombreux histologistes confirment les resultats precedents. Bientot, il ne reste plus rien des reseaux de Gerlach. De plus, Retzius et Lenhossek constatent la similitude morphologique des neurones de vertebres et d'invertebres 7 • Ainsi les decouvertes vont se multiplier et reveler la structure intime du cerveau du cervelet, du bulbe rachidien et de la protuberance annulaire, du bulbe olfactif, de la moelle epiniere, des ganglions rachidiens et sympathiques etc. Kolliker, A. van Gehuchten (1861-1914), sont parmi les investigateurs les plus celebres. Mais Kolliker tient a valoriser les travaux de C. Golgi. Le 26 mai 1890, il l'engage a publier ses travaux sur la moelle epiniere, qui ne sont pas connus. Illui fait remarquer que ses travaux, publies dans de nombreuses petites revues, sont impossibles a trouver a l'etranger. Le lendemain, ayant re~u de Golgi ses Studi istologici sul midollo spin ale de 1881 , il est surpris de la richesse de ces travaux et lui ecrit: C'est done malheureusement votre faute, si moi et d"autres ont attribue a Ramon y Cajal beaucoup de choses qui vous appartiennent. Maintenant queje suis en possession de ce travailj'en traduirai les principaux passages pour mon memoire sur Ia moelle epiniere, qui en somme ne sera pas beaucoup plus qu'une confirmation de vos decouvertes ... Sije suis bien oriente,je ne puis attribuer rien d'autre a Ramon y Cajal que Ia description detaillee de Ia bifurcation des fibres sensitives. Quant a ses collaterales, vous les avez deja vues. Ai-je raison en cela? Ou auriez-vous deja decrit ces bifurcations ailleurs? (27 mai 1890). A nouveau le 2janvier 1891, Kolliker re($oit trois brochures de Golgi sur le Tractus olfactif (1882), le bulbe olfactif ( 1875) et la retine du cheval ( 1872). Et, a nouveau il lui demande de cesser de publier ses travaux dans des revues qui ne sont pas - 978-90-04-41867-7 Downloaded from Brill.com11/09/2020 03:52:17PM via free access Evolution de l' histologie du systeme nerveux au XIXe siecle 21 repandues et connues. 'N ous ne pou vons pas no us abonner a to us vos joumaux et il sera necessaire de vous concentrer a ou on deuxjoumaux.' 'Heureusement', dit-il, 'vous avez maintenant votre Anatomischer Anzeiger de Siena', c'est-a-dire II Monitore Zoologico Italiano fonde en 1890. Le 15 mars 1894, Kolliker entretient Golgi de la parution prochaine de la traduction allemande de ses ouvrages. La faculte de Wiirzburg serait fiere d'etre citee par Golgi dans sa preface 8 • En 1896, Kolliker acheve le second volume de Ia 6e edition de son Histologic. A plusieurs reprises il rend hommage a Golgi: J'espere que vous trouverez que le nom de Golgi est toujours pour moi un nom venere etqueje lui rend honneur autant que possible. ( 16 janvier 1896). Vous trouverez votre nom a beau coup d'endroits et vous verrez queje vous regarde comme celui qui a le premier ouvert Ia voie pour une comprehension vraie de Ia structure si compliquee du Cerveau et je n 'ai besoin que de nommer le bulbe olfactif, Ia couche grise de cerveau et Ia Come d' Ammon pour rappeler vos grandes decouvertes. (15 juillet 1896). C. Golgi cootie a !'appreciation de Kolliker tous ses nouveaux travaux. Le 12 octobre 1798, Kolliker repond: J'ai re<;u et lu avec un interet bien vifvotre nouveau travail sur Ia structure des cellules nerveuses [II s'agit de sa decouverte de l'appareil rhiculaire interne]. Malheureusement le mot de l'enigme m'echappe aussi et il faudra pour le moment se contenter d'observer avec attention et sans arriere pensee. Et, le 14 mai 1900, il prie Golgi de lui quelques preparations: ... j'ai encore une grande faveur a vous demander, savoir de m'envoyer des preparations del reticolo interno des cel/ules des gang/ions spinaux, des cellules de Ia moelle et des cellules de Purkinje et des ce/lules pyramidales du cerveau. Rieffini e Giacomini m'ont aussi promis de leurs preparations, ainsi que Negri et Pens a e Marenghi et peut etre votre influence sur ces collegues les obligerait de ne pas oublier tout a fait. .. Quant a votre apparato reticolare je suis de l'avis qu'il faut le com parer aux canaux que vous avez trouves dans les glandes peptiques et le regarder comme un systeme de canalicules interieurs en rapport avec les proces chimiques, qui ont lieu dans les cellules nerveuses et peut-etre aussi avec les fonctions speciales des cellules. Quant aux canaux de Holmgren et de Bethe il me parait, qu'ils different des votres, vu que vous n'avezjamais observe des communications avec I' exterieur des cellules 9 • L'estime de Kolliker pour Golgi etait sincere et profonde. Aussi, en 1894, la Faculte de medecine de Wiirzburg decema le prix Rinecker a Golgi. Le 8 decembre 1893, Kolliker est heureux d'ecrire: Mon cher ami! Je viens vous annoncer que notre Faculte de medecine a dec rete par unanimite!le vous donner le Prix Rinecker, qui se donne tousles trois ans pour les travaux les plus remarquables dans une des branches de Ia medecine ... Ce prix a ete fonde il y a 3 ans par le fils de notre collegue Rinecker, en l'honneur de son pere, membre distingue de notre faculte, eta ete donne pour Ia - 978-90-04-41867-7 Downloaded from Brill.com11/09/2020 03:52:17PM via free access 22 Georgette Legee premiere fois en 1891 aRobert Koch ... Cette annee no us avions dec rete que le prix serait donne aun anatomiste et nous n"avons pas trouve de meilleur. que vous. mon cher ami, qui avez contribue puissamment au progres de l'anatomie fine du systeme nerveux par vos decouvertes et par vos travaux. Et, des 1901, Retzius ayant refuse d'etre propose pour le prix Nobel, Kolliker proposa de suite Golgi. Ebner, His, Recklinghausen firent de meme. Io ho proposta uno solo e questo e il mio amico, il grande Camillo Golgi! Anche v. Ebner, His e Recklinghausen hanno propos to Golgi e vede dunque che il amico Golgi a niente altro da fare che da aspettare. (Wiirzburg 26.1.1901) Mais, en 1901, 1e prix fut attribue a E. Behring (1854-1917) pour ladecouverte des serums antidiphterique et antitetanique. II fallut attendre 1905 pour que le prix Nobel soit partage entre C. Golgi et S. Ramon y Cajal. Et, le 11 decembre 1906, 1ors de Ia reception des prix a Stockholm, Golgi intitulait sa conference: La doctrine du neurone. Theorie etfaits. Son but est d'exposer uncertain nombre de faits s'opposant a une conception du neurone qu'il qualifie de doctrine. L'impulsion donnee par sa decouverte de 'Ia coloration noire' a permis d'affirmer que le corps de Ia cellule nerveuse avec to us ses prolongements constituait un organisme elementaire independant. A cette unite 'entrevue', dit-il, Waldeyer a donne le nom de neurone. L 'oeuvre de plusieurs savants a precise que le neurone constituait une triple unite independante: I. le neurone est une unite embryologique, c'est-a-dire derivant d'une cellule embryonnaire unique; 2. le neurone est anatomiquement, meme a l'etat adulte, une unite cellulaire; 3. le neurone est une unite physiologique. Les faits apportes par Golgi concement essentiellement les rapports entre les neurones. II oppose a I' independance des neurones, a leurs relations par continuite entre corps cellulaires et arborisations terminates, !'existence d'un reseau diffus permettant des contacts multiples entre collaterales et fibrilles nerveuses 1es plus tenues. Au point de vue histogenese, Golgi rappelle !'affirmation de His concernant l'independance des neuroblastes chez l'embryon humain. Mais dans l'embryon de poulet, a !'aide de 'Ia coloration noire' on a pu observer des faits d'une finesse et d'une complexite surprenante. 'On est done porte a croire, dit-il, que cette pretendue independance n'est, au fond, que l'impossibilite de verifier des rapports plus intimes qui peuvent exister.' Et il conclut: 'dans l'etat actuel des connaissances relatives a l'histogenese du systeme nerveux, il n'est pas possible d'affirmer avec certitude que ce que nous savons sur I' origine des cellules nerveuses ait une valeur fondamentale bien sure et puisse servir a Ia pretendue independance embryologique de Ia cellule nerveuse'. Quant aux neurones adultes, Golgi en distingue deux sortes: ceux a long prolongement nerveux ayant un nombre plus ou mains considerable de fibrilles colla- 978-90-04-41867-7 Downloaded from Brill.com11/09/2020 03:52:17PM via free access Evolution de l' histologie du systeme nerveux au X/Xe siecle 23 terales, et ceux dont le prolongement nerveux se subdivise rapidement en un nombre infini de fibrilles. Le premier type est represente par les neurones multipolaires des comes anterieures de Ia moelle epiniere, le second par les cellules de Purkinje du cervelet. Au n!seau diffus prennent part toutes les fibrilles nerveuses de ces deux types de neurones. Surles rapports entre ces fibrilles Golgi exprime cette idee importante: En presence d'une disposition reticulaire aussi fine que celle que j'ai decrite alors, disposition dans laquelle les fibrilles depourvues d'enveloppe isolante de myeline courent cote a cote ou bien tres pres les unes des autres et ont entre elles des rapports de contact frequents et etendus, j'ai declare qu'il n'y avait pas lieu de croire que Ia continuite directe entre les fibrilles de differentes provenances etait une condition sine qua non pour Ia transmission de !'excitation des unes aux autres. J 'ai pense au contraire que ces rapports etaient plus que suffisants pour que I' excitation fut transmise en tous sens ... Ce que je viens de rappeler sur le reseau ... prouve Ia continuite anatomique et fonctionnelle entre les cellules nerveuses. Et voila Ia raison qui m'empeche d'admettre !'idee de cette independance de chaque cellule nerveuse qui est le fondement essentiel de Ia doctrine du neurone. L' organisation de Ia fascia dentata, dit -il, se prete particulierement a illustrer les rapports entre fibrilles eta demontrer I' action d' ensemble de cellules nerveuses par opposition a Ia pretendue action individuelle. Dans les debats sur le neurone, explique Golgi, les prolongements protoplasmiques ontjoue un role important. II ecarte Ia conception du reseau nerveux de Gerlach constitue par les subdivisions infinies de ces prolongements, et qui a pu preter a confusion avec son reseau diffus 10 • D'apres les terminaisons renflees qu'il observe au niveau de certains vaisseaux sanguins, il pense qu'il serait logique d'attribuer aces prolongements, a cote de leur role nerveux conducteur, un role nutritif. Les travaux de Monti ont, en effet, montre que !'occlusion embolique de petits vaisseaux cerebraux entraine Ia degenerescence des prolongements protoplasmiques toumes vers le vaisseau occlus (observation experimentale faite au moyen de Ia reaction noire). Cette degenerescence gagne ensuite le corps cellulaire puis !'axone. Mais Golgi avoue que le probleme de Ia structure des cellules nerveuses et de Ia signification de leurs differents elements est encore bien loin d'etre resolu. Au sujet de I' appareil reticulaire endocellulaire qu'il a decrit lui-meme sur les ganglions intervertebraux de cheval et de chien, il declare aussi que Ia signification de ces appareils represente encore un probleme irresolu. D'autre part, les etudes d'Apathy sur Ia structure fibrillaire de cellules nerveuses d'invertebres ne peuvent etre transferees aux vertebres, rien n'autorise de telles extrapolations. De plus, Golgi rap porte aussi I' opinion de Jaderholm: Amon avis, declare ce demier, les formations reticulaires des cellules doivent etre considerees comme des produits artificiels determines par un phenomene d'agglutination. Ces formations reticulaires peuvent etre aussi simulees par le plasma qui, coagule sous forme de reseau, se colore en meme temps que les fib rilles, cela arrive le plus sou vent par Ia methode de Donaggio, beaucoup moins frequemment par celle de Cajal et tout a fait rarement par celles de Be the et de Bielschowsky. - 978-90-04-41867-7 Downloaded from Brill.com11/09/2020 03:52:17PM via free access 24 Georgette Legee Ramon y Cajal a, en effet, decrit largement les fibrilles du corps cellulaire et des prolongements protoplasmiques mais, selon Golgi, aucune de ces questions n'est resolue. Des resultats differents obtenus par des voies differentes convergeront peut-etre vers un meme but. Golgi examine enfin le probleme du neurone unite physiologique, lie a Ia theorie de Ia polarisation dynamique ebauchee par van Gehuchten, et que Ramon y Cajal a developpee et etendue. En realite, pense Golgi, ni cette theorie, ni Ia loi de A. V. Waller (1816-1870) n'exclut l'idee de !'existence du reseau nerveux diffus. Mais, dit-il, 'Ia doctrine de l'independance fonctionnelle du neurone aurait pu trouver un appui indirect dans les etudes sur les localisations cerebrates, pourvu que !'idee de localisation gardat sa forme initiale, c'est-a-dire qu'on attribuat a des regions bien determinees et delimitees du cerveau des fonctions sensitives et motrices bien distinctes et precises.' Mais les idees sur les localisations ont evolue: on cons tate peu de precision dans les limites des zones, on observe des possibilites de substitutions et de compensations, ce qui s'accorde avec les relations multiples entre neurones observees par Golgi dans le reseau diffus qui presente le maximum de complication et d'extension de rapports entre fibrilles. Golgi avait d'ailleurs ecrit: Tout en declarant inadmissible !'existence de districts cent raux exactement bomes, representent le siege exclusif de Ia distribution centrale des fibres nerveuses, nous croyons pourtant pouvoir admettre qu 'il existe des territoires affectes a Ia distribution preponderante et plus directe des fibres. II se rallie a !'idee que Ia fonction specifique n'est pas en rapport avec des particularites d' organisation des centres, mais plutot avec Ia specificite des organes peripheriques transmetteurs ou recepteurs. Enfin il conclut: Aucun des arguments, sur lesquels Waldeyer a appuye Ia doctrine de l'individualite et de l'independance du neurone, ne saurait soutenir l'examen . . .. Les cellules nerveuses au lieu de deployer une action individuelle agissent avec ensemble . .. . je ne puis abandonner !'idee d'une action unitaire du systeme nerveux. Le 12 decembre 1906, Ramon y Cajal presentait egalement sa conference a !'occasion de Ia remise du prix Nobel. Elle s'intitulait: Structures et connexions des neurone s. Elle apportait uncertain nombre de faits, obtenus avec la methode de Golgi et confirmes par celle de P. Ehrlich (1854-1915)1', qui ont revele Ia disposition terminate des fibres nerveuses ('ramilles' des axones et des collaterales nerveuses) et les rapports entre neurones. Elle envisageait ensuite Ia texture du protoplasme nerveux et Ia doctrine neurogenetique de His. Les faits reconnus impliquent, selon Cajal, trois postulats physiologiques: I. Les systemes de ramifications pericellulaires complexes font admettre que les courants nerveux se transmettent d'un element a !'autre en vertu d'une sorte d'induction ou influence a distance. - 978-90-04-41867-7 Downloaded from Brill.com11/09/2020 03:52:17PM via free access Evolution de l' histologie du systeme nerveux au XIXe siecle 25 2. Corps cellulaires, prolongements dendritiques et cylindres-axes soot des appareils de conduction; ils pn!sentent la meme structure fibrillaire. 3. Lamarche des impulsions se fait des dendrites a !'axone: c'est la polarisation dynamique des neurones. Ayant pose ces postulats Ramon y Cajal expose d'abord quelques exemples frappants de connexions intemeuronales: connexions des racines sensitives de la moelle epiniere; connexions des fibres visuelles et des cellules de la retine; connexions des cellules et des fibres dans une lamelle cerebelleuse. 11 examine le cas des fibres centrifuges des organes centraux (sans d'ailleurs pouvoir leur attribuer un role defini). II affirme que dans le domaine histologique les resultats ainsi obtenus par les methodes de Golgi et d'Ehrlich peuvent etre consideres comme definitifs. Par contre, lorsqu'il envisage la texture fibrillaire du protoplasma nerveux, etudie par sa methode du nitrate d'argent reduit ou par les autres procedes neurofibrillaires (Simarro, Donaggio, Bielschowsky ... ), il reconnait que les inductions physiologiques tirees des observations peuvent etre contestables: 'Nos affirmations'' dit-il, 'ne sauraient aller au-dela des revelations des methodes contemporaines.' II ajoute meme: PeuH!tre la technique decouvrira-t-elle avec le temps quelque procede de coloration capable de deceler des connexions nouvelles et plus intimes entre les neurones supposes en contact. On ne peut rejeter a priori la possibilite que Ia foret inextricable du cerveau dont nous nous imaginons a voir determine les dernieres branches et feuilles ne possede encore quelque enigmatique systeme de filaments reliant !'ensemble neuronal comme les lianes rattachent les arbres des forets tropicales. C'est la une idee qui, pour se presenter a nous avec le prestige de !'unite et de la simplicite, a toujours exerce et exerce encore une puissante suggestion meme sur les esprits les plus serins. Ramon y Cajal rapporte ensuite de nombreuses preuves qui detruisent l' hypothese 'catenaire' de Dohrn, suivant laquelle les ax ones des nerfs se formeraient par fusion d'une chaine de cellules ectodermiques: 1. dans la regeneration on observe le bourgeonnement de la fibre, la formation de 'boules' ou bourgeons d'accroissement, et jamais la participation de cellules annexes comme les cellules de Schwann; 2. de meme, dans Ia neurogenese on observe le meme bourgeonnement a partir des neuroblastes de His. L 'hypothese catenaire est done impossible a soutenir: il y a autonomie regeneratrice des neurones adultes, il y a individualite neuronale des les premiers stades embryonnaires. Cette hypothese, ainsi que celle de l'origine pluricellulaire de la cellule nerveuse, avait aussi ete rejetee par C. Golgi. Nous avons vu que la methode de Golgi avait ete rapidement adoptee par de nombreux histologistes, non seulement par Kolliker et par Ramon y Cajal qui la perfectionna, mais aussi par to us ceux qui participerent a I' evolution de la connaissance du neurone en anatomie comparee et histogenese aussi bien qu'en histologie - 978-90-04-41867-7 Downloaded from Brill.com11/09/2020 03:52:17PM via free access Georgette Legee 26 pure. Et, lorsque C. Golgi re~oit le prix Nobel, il termine ainsi sa conference: Je n'ose pas attribuer cette supreme distinction a rna valeur personnelle, ni directement a mon oeuvre, pour si patiente qu'elle ait ete et constamment dirigee vers les recherches scientifiques, mais je me permets de croire qu'elle a ete attribuee en reconnaissance, non immeritee, du travail accompli par tous ceux qui puiserent dans mes etudes une impulsion feconde en bons resultats. Son honnetete intellectuelle, ses scrupules, sa prudence, ont reserve pour l'avenir une voie libre. Ramon y Cajallui-meme, dans sa conference, a fait preuve de modestie, lui dont Kolliker disait: 'II se croit le premier histologiste et le seul a qui est permis d'avoir une opinion sur Ia structure du systeme nerveux' (lettre du 24 fevrier 190 1), apropos des jugements emis par Ramon sur les travaux de Golgi et de son ecole. Comme le remarque Golgi, des resultats differents pourront, plus tard, se rejoindre, et il aime aciter les 'nobles paroles' d'Alfred Nobel: Chaque nouvelle decouverte laisse dans le cerveau des hommes des germes qui rendent possible qu'un nombre de plus en plus grand d' esprits des nouvelles generations devienne capable d'embrasser de plus vastes conceptions scientifiques. II ajoute: Mon voeu est que ces nouvelles etudes anatomiques, sur lesquelles cette Academic [de Stockholm], dans un ordre d'idees si eleve, a voulu attirer !'attention du monde, puissent representer un nouvel element de progres pour l'humanite. C. GOLGI, ILLUSTRATIONS - 978-90-04-41867-7 Downloaded from Brill.com11/09/2020 03:52:17PM via free access Evolution de I' histologie du systeme nerveux au X/Xe siecle 27 Discours pour le prix Nobel, 1906: La doctrine du neurone. Fig . 2. Tai pu verifier que les fibrilles nerveuses venant du prolongement nerveux des cellules de Ia couche moleculaire, ne font que passer pres du corps des cellules de Purkinje pour se continuer dans le riche et fort caracteristique reseau existant dans Ia couche de grains. Les deux types de cellules nerveuses distingues par C. Golgi. Fig . 3. 'cellule de Ia region antero-laterale des comes anterieures de Ia moelle epiniere; son prolongement nerveux penetre dans une racine anterieure apres a voir produit une serie de branches collaterales finement subdivisees. ' Fig. 4. Cellule de Purkinje du cervelet ; son pro- . longement nerveux traverse Ia zone granuleuse, produisant lui aussi une serie de fibrilles tres fines, et va ensuite se joindre aux fibres nerveuses de Ia substance blanche des circonvolutions cerebrales. - 978-90-04-41867-7 Downloaded from Brill.com11/09/2020 03:52:17PM via free access 28 Georgette Legee Fig. 5. 'cellule du deuxieme type de Ia moelle epiniere (zone de passage entre les comes anterieures et posterieures)' ou neurone intercalaire. Fig. 6. Cellule de Ia couche des grains du cervelet. Un des exemples les plus caracteristiques de Ia fa~on dont se comporte le prolongement nerveux des cellules du deuxieme type. Fig. 7. Continuite artatomique et fonctionnelle entre les cellules nerveuses illustree par Ia structure microscopique de Ia fascia dentata. 'Les petites cellules nerveuses qui constituent Ia couche elegante et caracteristique de Ia fascia dentata, envoient leurs prolongements protoplasmiques vers Ia surface de cette circonvolution rudimentaire, et en meme temps elles emettent par le pole oppose un unique et tres mince prolongement - 978-90-04-41867-7 Downloaded from Brill.com11/09/2020 03:52:17PM via free access Evolution de I' histologie du systeme nerveux au X/Xe siecle 29 nerveux. Celui-ci, du moins pour ce qui regarde Ia plus grande partie des cellules, se subdivise en filaments d'une extreme tenuite qui donne lieu a Ia formation d' une zone reticulee. D'autre part, un faisceau bien individualise des fibres provenant de Ia fimbria et de Ia couche medullaire qui revet Ia surface ventriculaire de Ia corne d'Ammon, se dirige vers lafascia dentata. Les fibres de ce faisceau ... se subdivisent d'une fa~on excessivement compliquee, s'entrelacent avec les branches des prolongements nerveux des cellules en formant avec elles Ia zone reticulaire . .. . On a ainsi I' impression que Ia couche reticulaire se trouve interposee comme un terrain commun entre les prolongements nerveux des cellules d'un cote, et les fibres nerveuses de I' autre. Tout ce qu' on releve de ces rapports parle en faveur d'une action cumulative des cellules de toute Ia fascia dentata , et contre une action individuelle de ces cellules.' Fig. 8. 'II n'est pas difficile de voir quelques uns de ces boutons terminaux s 'avancer parfois meme au-dela des limites des circonvolutions jusqu 'au vaisseaux meningiens.' Exemple, sur le cervelet de jeunes oiseaux. 'En presence de ce fait, n'est-il pas logique de penser que les prolongements protoplasmiques representent aussi des organes de nutrition pour le corps cellulaire?' Fig. 9. Appareil reticulaire endocellulaire: cellule nerveuse des ganglions intervertebraux chez le chien. - 978-90-04-41867-7 Downloaded from Brill.com11/09/2020 03:52:17PM via free access Georgette Legee 30 S. RAMON Y CAJAL, ILLUSTRATIONS Discours pour le prix Nobel, 1906: Structure et connexions des neurones Fig. 10. Connexions des cellules et des fibres dans une lame lie cerebelleuse A cellule etoilee de Ia zone plexiforme B neurone de Purkyne b dendrites des neurones de Purkyne C collaterale recurrente D fibre grimpante Fig. II. Neurofibrilles des neurones des vertebres: cellules de Ia moelle epiniere du lapin de quelques jours. - 978-90-04-41867-7 Downloaded from Brill.com11/09/2020 03:52:17PM via free access Evolution de I' histologie du systeme nerveux au X/Xe siecle 31 NOTES * Communication presentee au Symposium de l'Academie internationale de l'Histoire de Ia Medecine, Strasbourg 1980 I. Cette methode, fructueuse au point de vue macroscopique, fut encore utilisee dans le courant du 19e siecle par K.F. Burdach (1776-1847), A.L. Foville (1799-1840), F. Arnold (1803-1890), J. Henle (1809-1885), K.B. Reichert (1811-1876) etc. 2. C. Golgi, Sui/a struttura della sostanza grigia del cervel/o. In: Gazetta medica lombarda, Milano, t.IV, 1873. 3. Carl Weigert (1845-1904) fut professeur d'anatomie pathologique a Leyde puis a Francfort-surMain. II decouvrit une methode de coloration des fibres a myeline. II utilise I' action combinee du bichromate de potassium qui durcit le tissu nerveux et de l'hematoxyline qui teint. II obtient ainsi des laques de couleur vive qu'un lavage plus ou moins prolonge au prussiate de potassium borate enleve a tout ce qui n'est pas myelinise. Cf. Ueber eine neue Untersuchungsmethode des Centralnervensystems. In: Centra/blatt fur die medicinischen Wissenschaften, 20, 1882, p. 753-757, 772-774. 4. Heinrich Miiller ( 1820-1864), ami de Kolliker, inventeur du liquide fixateur qui porte son nom, dont Ia composition est donnee, in Anatomische Untersuchung eines Mikrophtalmus. In: Verhandl. d. Physic. Medic. Ges. Wurzburg, 10, 1860, p. 138-146, Tab. I, Fig. 12-15. 5. Wilhelm von Waldeyer (1836-1921); c'est en 1891 qu'il donna le nom de neurone a !'ensemble de Ia cellule nerveuse et de ses prolongements. 6. Cf. aussi lettre de Kolliker a Golgi du 22 decembre 1890: 'Que dites-vous du nouveau travail de Ramon et de l'action conductrice, qu'il suppose aux prolongements protoplasmiques des grandes cellules du lobe olfactif?' 7. Cf. lettre de Kolliker a Golgi du II mars 1891: 'Avez-vous re~u le nouveau travail de Retzius sur le systeme nerveux des crustaces? Tres important.' Gustaf Magnus Retzius (1842-1919) fut professeur d'anatomie puis se consacra a Ia publication du periodique Bio/ogische Untersuchungen. 8. II s'agit de Ia traduction suivante: Untersuchungen uber den feineren Bau des centra/en und peripheren Nervensystems. Jena, G. Fischer, 1894, 272 p., atlas de 30 pl. 9. Kollikerparle aussi de ses travaux. Dans sa lettre aGolgi, du 8 fevrier 1900, il ecrit: 'Io mi occupo in questo invemo specialmente del systema nervose centrale deii'Omithorhynchus, deii'Echidna, della Phalangista e del Dasypus e ho l'intenzione di dimostrare una seria di preparati a Pavia' [pour le congres d'anatomie de Pavie de 1900]. 'Un articolo sull" incrociamento dei fascicoli pyramidali di questi animali e stato publicato nello volume du cinquantenaire de Ia Societe de Biologie de Paris.' Cf. aussi lettres du 25 decembre 1900 et du 24 fevrier 190 I. I0. Golgi note que plusieurs confusions ont ete faites au sujet de son reseau diffus: I) on a donne le nom de Golgi-Netz a un reseau pericellulaire et peridendritique qui a ete decrit; 2) Bethe a appele reseau de Golgi une formation qui revet parfois l'apparence d'un reseau (formation dec rite parGolgi), mais qui n'a rien de commun avec son veritable reseau nerveux diffus. II. Paul Ehrlich (1854-1915), cree une nouvelle methode de coloration des neurones, en 1886. Lebleu de methylene d'Ehrlich, est une couleur de composition chimique particuliere, n'ayant de propriete elective que sur les neurones et leurs prolongements, mais seulement sur le tissu nerveux vivant ou recemment mort. La methode d'Ehrlich fut done, a ses debuts, utilisee seulement pour les organes nerveux peripheriques des vertebres et pour les organes nerveux centraux et peripheriques des invertebres (Retzius). L'emploi d'un fixateur indelebile (le molybdate d'ammonium substitue au picrate d'ammonium ou fixateur infidele de Dogie/) permit d'etendre l'emploi du bleu de methylene d'Ehrlich a tousles systemes nerveux. - 978-90-04-41867-7 Downloaded from Brill.com11/09/2020 03:52:17PM via free access 32 Georgette Legee BIBLIOGRAPHIE Belloni, L., L' epistolario di Albert Koelliker a Camillo Golgi a/ Mus eo per Ia storia della Universita di Pavia. Milano Istituto Lombardo di Scienze e Lettere, 1975, vol. XXVI, Memoria 4. Burdach, E., Beitrag zur mikroskopischen Anatomie der Nerven. Konigsberg, 1837. Dejerine, J .J., Anatomie des centres nerveux. Paris, Rueff, 1895-190 I, 2 vol. chap. I, Methodes utili sees dans !'etude des centres nerveux. Golgi, C., Opera omnia. Milano, V. Hoepli, 1903, 3 vol. in-4°. Sullafina anatomica degli organi centrali del sistema nervoso. Milano, 1886. Kruta, Vladislav, A note on the history of Purkyne cells. In: J.E. Purkyne (1787-1869), Centenary Symposium. Bmo, UniversitaJ.E. Purkyne, 1971, p. 125-136. Malpighi, M., Opera omnia. Ludg. Bat., P. Vander Aa, 1687,2 vol. in-4°. Ramon y Cajal, Santiago, Les nouvelles idees sur Ia structure du systeme nerveux chez/' homme et chez les vertebres, trad. de l'espagnol par le Dr L. Azoulay. Preface de M. Mathias Duval. Paris, C. Reinwald et Cie, 1894. La methode a/' argent reduit associee a Ia methode embryonnaire pour/' etude des noyaux moteurs et sensitifs. In: Bibliographie anatomique. Revue des travaux en langue fran<;aise, anatomie, histologie, embryologie, anthropologie, Berger-Levrault et Cie, fascicule 5, t.XIII. Methode a /'argent reduit ou methode simple pour Ia coloration des neurofibrilles avec ses resultats dans les difft?rents centres nerveux. Ibid., fascicule 1, tome XIX. Die Retina der Wirbelthiere. Untersuchungen mit der Golgi-Cajai-Chrom silbermethode und der Ehrlich' schen Methylblaufiirbung nach Arbeiten von S. Ramon y Cajal, Professor der Histologie an der Medic. Fakultat zu Madrid. In Verbindung mit dem Verfasser zusammengestellt, iibersetzt und mit Einleitung versehen von Dr. Richard Greeff, Privatdozent fiir Augenheilkunde an der Universitat zu Berlin mit 7 Tafeln und 3 Abbildungen im Text. Wiesbaden, Verlag von J.F. Bergmann, 1804. Histologie du systeme nerveux. Trad. fran<;aise par le Dr L. Azoulay. Paris, A. Maloine, 1909. Ranvier, L., Le~ons sur /'histo/ogie du systeme nerveux. Paris, F. Savy, 1878,2 vols. Remak, R., Observationes anatomicae et microscopicae de systematis nervosi structura. Berolini, 1838. - 978-90-04-41867-7 Downloaded from Brill.com11/09/2020 03:52:17PM via free access An ancient Greek theory of hemispheric specialization GERT-JAN LOKHORST It seems to be a matter of general consent nowadays that theories on asymmetrical functional differences between the cerebral hemispheres were first proposed in the nineteenth century. Most people will probably think of Broca's 1861 discovery of a speech centre in the left frontal lobe as the first step in this field. Some will go back somewhat further and think of Marcel Dax, who allegedly discovered Broca's centre in 1836 1 • This is, however, the 'terminus post quem'; even in studies devoted to the history of hemispheric specialization, of which a number have appeared in recent years 2 , it is invariably asserted that: it was in fact only in the nineteenth century that questions as to the possible asymmetry of function of the two cerebral hemispheres of Homo sapiens began to be raised 3 • In this paper, it will be shown that this picture is incorrect. I want to draw attention to a Mediaeval Latin text in which an ancient Greek theory on hemispheric specialization is quite unequivocally stated. The text has already been published twice; however, except for one passing reference from 1917 4 , it seems to have gone completely unnoticed. The text in question may be found in the second part of a short medical treatise which according to V. Rose 5 has only been preserved in the so-called Brussels manuscript of Theodorus Priscianus, dating from the twelfth century6 • The manuscript does not state the name of the author of the treatise. Count Hermann von Neuenar, its first editor, mistook Theodorus Priscianus for the writer of the treatise 7 • On the basis of its content and its language it must, however, be attributed to Priscianus' teacher, the fourth-century contemporary of Augustine, Vindicianus8. Vindicianus' source seems to have been one of the lost works of Soranus of Ephesus, the second-century gynaecologist who also took a great interest in the history of medicine. Unfortunately, it cannot be established with certainly whose doctrine So ran us was expounding. As the opinions expressed are similar to those of Diodes of Carystus, in so far as these are known, Wellmann 9 thought the entire second part of the treatise could be traced back to this famous physician from the fourth-century B.C., whom Soranus is known to have held in high esteem. Later on, however, Jaeger 10 was more cautious and pointed out that we may only ascribe those parts to Diodes for which we have independent evidence that he held them. Unfortunately, we do not have such evidence for the theory of the hemispheres. ClioMedica, Vol.l7no.l,pp.33-38