patliogenic bacteria, with the impetus this fact has given to the search for methods of producing immunity. Then, too, we must not forget to recall the great aid chemistry has lent to therapeutics, not only giving us methods for the preparation of purer and more definite products, but opening up methods of studying the physiological action of drugs which have greatly advanced the growth of scientific pharmacology."
A course in physiological chemistry worthy of the name should extend. Professor Chittenden thought, at least through half the college year, and preferably through a whole year, with an average of fifteen hours of laboratory work a week, interspersed with lectures, recitations, and demonstrations. It could be advantageously undertaken only by men who already have knowledge of general, analytical, and organic chemistry, physics, anatomy, and histology, together with more or less familiarity with general physiology. An outline of the order of such a course as existed in the author's mind is given in the address, with the observation that, to make it of the highest value, no opportunity should be lost to show the physiological bearing of all the results obtained; to try and instill into the mind of the student the idea that the facts of physiological chemistry have a wide application.
The biological course (purely optional), started originally in the Scientific School, is now open also to those junior and senior students in the academical department who are desirous of taking this line of work. Naturally, the majority of the students electing this course of study, extending through two years of the college course, are intending to enter upon the study of medicine after graduation, and it is interesting to note that the graduates of this course almost invariably take a high standing in their professional study, thereby indicating the beneficial effects of their biological training.
To-day the Sheffield laboratory of physiological chemistry is a very different structure from the laboratory of twenty-three years ago. Situated in what was formerly the Sheffield mansion, on Hillhouse Avenue, nine good-sized rooms are required to care for the many students working there, while one assistant professor and three instructors aid in carrying on the instruction given.
In addition to his duties at Yale, Professor Chittenden has recently been made lecturer on physiological chemistry at Columbia University.
The list of Professor Chittenden's publications to date contains ninety-three titles of papers, etc., nearly all contributions to scientific journals and the proceedings of scientific societies, and nearly all bearing on physiological chemistry or subjects related to it.
