With the compliments of the writer. REFORM IN MEDICAL EDUCATION. PRESIDENTIAL ADDRESS, AMERICAN SOCIETY OF NATURALISTS, NEWYORK, DECEMBER 29th, 1898. H. P. BOWDITCH, M. D., LL. JX, D. Sc. [Reprinted from Science, N. 8., Vol. VIII., No. 209, Pages 921-927, December 30, 1898.] [Reprinted from SCIENCE, N. S.. Vol. VIII., No. 209, Pages 921-921, December 30, 1898.'] REFORM IN MEDICAL EDUCATION* The choice of a physiologist as the pre- siding officer of the Society of American Naturalists might, perhaps, have justified me in selecting some of the problems con- nected with experimental physiology as the subject of my remarks this evening, but, as questions of this sort are wont to awaken but a languid interest except among those who are themselves engaged in physiolog- ical research, I have thought it better to allow my choice of a subject to be guided by the fact that we are nearly all of us actively engaged in teaching as well as in studying our sciences, and to address you this evening upon some topic connected with education. My own experience of 27 years as a pro- fessor of physiology and of 10 years as Dean of the Harvard Medical Faculty nat- urally inclines me to discourse upon the subject of medical education and, since the great profession of medicine demands from its practitioners a certain familiarity with the fundamental truths of all the natural sciences, it can surely not be inappropriate to ask the representatives of those sciences to consider with me how far the progress of medicine and of the allied sciences has made it desirable to revise our methods of imparting medical instruction. Let me say at the outset that in speaking of the profession of medicine I use the term *Address of the President, delivered before the American Society of Naturalists at the New York meeting, December, 1898. 2 not in its narrow sense, to designate the art of curing disease, but in its broader signifi- cation, to include a study of the whole en- vironment of man as far as it affects the production and maintenance of a healthy mind in a healthy body. In what I shall have to say on this sub- ject I shall confine myself chiefly to the medical schools of this country, though it will be found, I think, that the conclusions to which I shall endeavor to lead you will have their application to medical schools through the world. The most important event in the history of medical education in this country oc- curred some thirty years ago, when many of the principal schools abandoned the plan of giving a series of winter lectures, which were attended by all the students, irrespec- tive of their proficiency, and established a graded system of instruction in which the studies of one year were preparatory to those of the next. Those whose experience in medical education is confined to the period since this change was made can scarcely appreciate the value and impor- tance of the reform which raised the med- ical schools of the country from a condition in which they were aptly compared to joint- stock manufacturing companies, concerned only in taking in as large an amount as possible of raw material in the shape of medical students and in turning out a maximum of the finished product, i. e., doctors of medicine, with a minimum cost to the producer. ‘ Cheap doctors and plenty of them ’ seems to have been the motto of the medical schools of that period. Since this reform the medical schools of the coun- try have been conducted on sound educa- 3 tional principles and the best of them com- pare favorably with the medical schools of Europe. During the last quarter of a century the improvement in medical education in this country has consisted chiefly in increas- ing the requirements for admission, in the lengthening of the course and in the exten- sion of the laboratory method of instruction. Important as these improvements have been, it may fairly be asked whether they have kept pace with the requirements imposed upon teachers by the remarkable advance in every department of medicine during the last thirty years. During this period we have seen the germ theory of disease established upon a firm basis and extended so as to throw light upon a large number of morbid pro- cesses with which it was formerly supposed to have no connection. Antiseptic methods have revolutionized the surgeon’s art. The study of the internal secretion of glands has led to the development of a system of glan- dular therapeutics. The use of the anti- toxin treatment has robbed one, at least, of the most dreaded diseases of more than half of its terror, while the use of instru- ments of precision has increased the accu- racy of our diagnosis in nearly all the ills to which flesh is heir. At the beginning of this period it was possible to impart to an intelligent medical student in a three years’ course of study a considerable fraction of the acquired med- ical knowledge of the time and to train him to safely use the comparatively simple methods of diagnosis and treatment then in vogue. At the present time, were we to seek to give to the same student a similar 4 proportion of the accumulated knowledge now at the disposal of the profession and to teach him the use of the refined modern methods for the studj7 and cure of disease, it may be reasonably estimated that a ten or even a fifteen years’ course of study would be required. As it is obviously im- possible to prolong the course of medical study to anything like this extent, the ques- tion arises : In what way shall newly ac- quired knowledge in the science and practice of medicine be incorporated into the exist- ing curriculum of the medical student? Up to the present time this question does not seem to have been seriously considered. As new and important subjects have forced themselves upon the attention of the med- ical profession, our schools have sought to meet the new condition simply by adding to the existing curriculum a more or less lengthy course of instruction on the subject in question. Thus the importance of en- abling physicians to recognize pathogenic microbes has led to the establishment of a department of bacteriology in our principal medical schools, while the great advance made in the treatment of special classes of disease has occasioned the appointment of numerous professors of specialties, such as gynaecology, orthoepedic surgery, paediatrics, etc. The medical curriculum has thus grown by what may be called, in biological lan- guage, a process of accretion, and there has been little or no attempt to make room for new instruction by the omission of less valuable courses or parts of courses, though in certain directions the advance of knowl- edge, by demonstrating the inaccuracy of previously accepted views, has led to a 5 simplification of instruction. When it has been found absolutely impossible to add any further courses a remedy for the con- gestion of instruction has been found in the prolongation of the medical curriculum from three years to four. It is, of course, evident that this process cannot be indefinitely continued. In fact, a slight study of the subject suffices to show that a limit has already been reached. In- deed, as long ago as 1870 Huxley was so thoroughly impressed with the crowded condition of the medical curriculum in England that he expressed “a very strong conviction that any one who adds to med- ical education one iota or one tittle beyond what is absolutely necessary is guilty of a very grave offence,”* and quite recently Professor M. Foster, in speaking of the enormously increased requirements in med- ical education, has expressed himself as fol- lows : a Kow it is obvious that, whatever may have been possible once, it is impos- sible nowadays to demand that all or each of these things should be learnt by the student of medicine. Though possibly the power of man to learn is increasing; though each science as it becomes more and more consolidated can be expounded and appre- hended with greater ease; though the grasp- ing of one science is in itself a help to the grasp of other sciences, yet beyond doubt that which has to be learnt is enlarging far more rapidly than is man’s ability to learn. ”f To extend the course of instruction in the * ‘Medical Education.’ Collected Essays, Yol. 111., D. Appleton & Co., 1894. f Address to the Students of Mason University College, Birmingham, October 3, 1898. 6 medical schools of this country beyond the present four-year limit does not, under the prevailing conditions of education in Amer- ica, seem desirable, and the curriculum of most of our schools is already so crowded that no considerable amount of instruction can possibly be added. In what way, then, can we give to our medical students an adequate amount of information on all the subjects embraced in the constantly widen- ing domain of medical science and art ? In other words, how shall instruction keep pace with knowledge ? In seeking an answer to this question it may be assumed that a medical school of the first rank should be an institution in which the most advanced instruction in all departments of medicine can be obtained, and on this assumption it is, of course, im- possible to arrange a course of study that every student must follow in all its details, for in the time which may properly be de- voted to a course of professional study it is quite impossible for even the most intelli- gent students to assimilate all the varied in- formation which such a school may reason- ably be expected to impart. It seems, therefore, to be evident that in arranging a course of medical study a dis- tinction must be made between those sub- jects which it is essential that every student should know, and those subjects which it is desirable that certain students should know, i. e., between those things of which no man who calls himself a physician can afford to be ignorant, and those which are important for certain physicians but not for all. In other words, provision must be made both for required and for elective studies. The introduction of the elective system 7 into a professional school is not an alto- gether novel proposition. For several years a large part of the instruction in the fourth year of the Harvard Medical School has been given in elective courses in various specialties, such as ophthalmology, otology, etc. The extension of the elective system to the earlier years of the course would be attended by no difficulty as far as details oi administration are concerned, and has, in- deed, been advocated by President Eliot in a speech at the dinner of the Harvard Med- ical Alumni Association in 1895. But the question may, perhaps, be asked whether it will be possible under such a system to se- cure the proper training of youug men for the duties of a profession in which experi- ence of life contributes so largely to success, and in which, therefore, a student at the beginning of his career may be supposed to be peculiarly in need of the guidance of his teachers. It is true that in the academic depart- ment of Harvard University the capacity of the average student to choose his course wisely and well has been demonstrated by the experience of many years, but it may be properly urged that the success of the system in the academic department does not neces- sarily justify its extension to a professional school. The responsibility of the medical faculty in granting the degree of M.D. is very different from that of the academic faculty in giving the A.B. diploma, since an imperfectly qualified practitioner of medi- cine may endanger the lives of his patients, while an unworthy graduate of the academic department can, as a rule, injure no one but himself. Hence the medical faculty may ustly be required to exercise greater caution 8 in bestowing tbe degree of M.D. than is nec- essary in the case of the A.B diploma. We must, therefore, enquire whether it is pos- sible to obtain the advantages of a flexible curriculum consisting largely of elective courses without losing the security against superficial and imperfect work which the preseht compulsory system is supposed to afford. Any one who is familiar with the existing methods of medical instruction is aware that in nearty every department many things are taught which are subsequently found to be of use to only a fraction of those receiving the instruction. Thus the surgical anatomy of hernia is taught to men who will subsequently devote themselves to dermatology; future obstetricians are required to master the details of physio- logical optics, and the microscopical anat- omy of tumors forms a part of the instruc- tion of men destined to a career as alienists. Now, no one can question the propriety of including instruction on all these subjects in the curriculum of a medical school, but it may be questioned whether every student should be forced to take instruction in them all. It may, perhaps, be urged that no choice of studies can be made without determining, to some extent, the direction in which the work of the future practitioner is to be specialized, and that such specializa- tion cannot be properly and safely permitted until the student has completed his medical studies. To this it may be answered that, whatever may be the dangers of too early specialization, the dangers of crowding the medical course with instruction of which many students do not feel the need and of thus encouraging perfunctory and super- 9 ficial work are certainly no less serious. Moreover, it will, doubtless, be found per- fectly possible to establish such a relation between the required and the elective courses that the requirements in each department will be in no way lowered, while a certain freedom of choice is per- mitted with regard to the direction in which the work is pursued. To illustrate this point, allow me to describe a possible arrangement of a course of study in the department of physiology with which I am, of course, more familiar than with any other. In the Harvard Medical School instruc- tion in physiology is now given in a course of about 100 lectures, besides recitations, conferences and practical laboratory work. Were the work to be rearranged in accord- ance with the above plan it would probably be found possible to condense into a course of about 50 or 60 lectures all the most im- portant facts of physiology with which every educated physician must necessarily be familiar. Attendance upon these lec- tures, combined with a suitable course of text-book instruction, would suffice to guard against gross ignorance of physio- logical principles. In addition to this re- quired work, short courses of eight or ten lectures should be provided,giving advanced instruction in such subjects as the physi- ology of the special senses, cerebral locali- zation, nerve-muscle physiology, the in- ternal secretion of glands, the physiology of the heart, circulation and respiration, the digestive secretions, the reproductive organs, etc. These courses should be elec- tive in the sense that no student should be required to take them all. Each student 10 might, however, very properly be required to choose a certain number of courses, which, when once chosen, become, for him required courses leading to examinations. The num- ber of special courses which each student should be thus required to elect should be sufficiently great to render the total amount of physiological instruction in no way in- ferior to that which is given under the pres- ent system. It would, doubtless, be found desirable in practice not to confine the possibility of taking elective courses to the year in which the required instruction is given, for a stu- dent may frequently, in the latter part of his course, become interested in a subject like mental diseases, for instance, and will then be glad of an opportunity to take spe- cial instruction on the physiology of cerebral localization. The elective courses should, therefore, be so arranged that they may be taken in any part of the medical curriculum. There is, in my opinion, no doubt that an arrangement of instruction similar to that here suggested for physiology could be ad- vantageously adopted in the departments of anatomy, histology, bacteriology, medical chemistry, pathology, surgery, and in the courses of instruction in the various spe- cial diseases, such as dermatology, opthal- mology, etc. Whether the instruction in clinical medicine and clinical surgery can be thus modified is a question about which more doubt may be entertained and which I prefer to leave to persons of greater ex- perience than myself in methods of clinical instruction. Under the existing conditions of medical education the introduction of the elective system in some form or other seems to be an 11 essential condition to any further important advance. If it be said that under this sys- tem the medical degree will cease to have the definite meaning now attached to it, and that it will be impossible to tell from his diploma in what way a physician has been educated, it may be replied that, though the degrees of A.8., A.M., Ph.D. and S.D. are affected with exactly this same uncer- tainty of signification, their value seems in no way diminished thereby. As long as the M.D. degree stands for a definite amount of serious work on medical subjects directed on the lines above indicated we may be rea- sonably sure that those who hold it will be safe custodians of the health of the commu- nity in which they practice. If it be urged that the elective system in medical education will lead to the produc- tion of a class of physicians who, owing to the early specialization of their work, will be inclined to overrate the importance of their specialty and to see in every disease an opportunity for the display of their special skill, it may be pointed out that this result is apt to be due not so much to early as to imperfect instruction in the work of a specialist, and that, since the elective system tends to encourage thor- oughness in special instruction, the evil may be expected to diminish rather than to increase. I have spoken of the extension of labora- tory instruction as an important forward step in the improvement of educational methods in medicine during the last quarter of a century, and I desire to bring my re- marks to a close with a few words on the relation between laboratory and didactic methods in medicine and on the employ- 12 ment of both methods in a system of in- struction including both required and elec- tive courses. There is perhaps no field of human activity in which the pendulum of reform makes wider excursions than in that of education. Whenever any given method is found to give unsatisfactory results there is a strong tendency to abandon it alto- gether in favor of some entirely different method. Thus the obvious defects of the oral system of examination employed in the Harvard Medical School thirty years ago led to its complete abandonment and to the adoption of the written examination book, though there is little doubt that a system combining the advantages of both the oral and the written methods could easily have been devised. In the same way the fact that many subjects have been, and indeed still are, taught in systematic didactic lec- tures which can be better taught by labora- tory methods tends to obscure the equally important fact that there are many other subjects in the presentation of which the living personality of the lecturer is a very important factor and which, indeed, can be properly presented to students only by those who have had much experience in weighing scientific evidence. In this connection it is interesting to recall the wise words of Hux- ley, who expressed himself on this subject as follows : “ What the student wants in a professor is a man who shall stand between him and the infinite diversity and variety of human knowledge, and wTho shall gather all that together and extract from it that which is capable of being assimilated by the mind.” * 13 To what extent the laboratory can re- place the lecture room will, of course, de- pend upon the nature of the subject taught. In such a branch as Anatomy, where facts learned by observation form the greater part of the knowledge to be imparted, laboratory work can be substituted for di- dactic instruction to a greater extent than is possible in subjects like Physiology and Pathology, where inferences from observa- tions and conflicting views must frequently be presented. In no department of medi- cine, however, will it probably be found possible to dispense entirely with a system- atic course of lectures in which a trained instructor may give to his class the benefit of his accumulated experience. A consideration of the nature of the sub- ject taught will also furnish a guide for the employment of laboratory and didactic methods in the required and elective courses above suggested. In general the required courses, being comparatively elementary and concerned chiefly with the presentation of well ascertained facts, may be made de- monstrative in their character and may be conducted in accordance with laboratory methods, though a short course of didactic lectures, parallel with laboratory work, will in most cases be found to be essential. In the elective courses which provide advanced instruction in many directions the limits of our knowledge wrill be more nearly reached. It will, therefore, be necessary to present and weigh the evidence for and against the various conflicting views which are almost certain to be held with regard to subjects lying within what Foster has called the ‘ penumbra ’ of solid scientific acquisition. For this purpose the most suitable method 14 of instruction seems to be a short course of carefully prepared didactic lectures which should, however, be varied by demonstra- tions whenever the nature of the subject will allow. It is, however, unnecessary to discuss these and other details at the present time. They will speedily arrange themselves as soon as the necessity for a comprehensive reform in our methods of medical instruc- tion is generally recognized, and it is in the hope of helping to secure this recognition that I have addressed these remarks to you this evening. In whatever way the remedy is to come it should not be long delayed, for the difficulty of giving adequate instruction to constantly increasing classes seeking in- formation over a constantly widening field of knowledge is felt each year with greater and greater keenness. H. W. Bowditch. Haevakd Medical School.