{Laboratory: Nine hours a week for one semester.)

In this section of the Manual the student is expected to ascertain what physiological reactions are produced by some of the more important and powerful of the drugs he has been investigating heretofore in the other laboratory. He will work first with simpler forms, gradually progressing to relatively more important presentations. But at each stage his great purpose should be to discover exactly what departures from the normal do take place. He must be ever on his guard not to read into his observations any preconception, prejudice, or opinion. He must pay strict attention to the work in hand, lest some important manifestation escape his observation. He must consistently endeavor to perfect those cardinal faculties of careful observation, logical deduction, and careful notation, on which depends much of his future success.

Each student will be required to prepare himself concerning the technique of any given procedure before being assigned full responsibility. The best available book on this technique is "Jackson's Experimental Pharmacology"; an additional vade mecum is "Sollmann's Laboratory Guide." Leading texts in Pharmacology are Cushny and Sollmann. Reference periodicals are: Journal of Pharmacology and Experimental Therapeutics, Journal of Laboratory Medicine, Journal of Biological Chemistry, Journal of Physiology, American Journal of the Medical Sciences, Journal of the American Medical Association.