Preliminary to the main subject of this paper I wish to make a few general remarks regarding the attitude of the general practitioner to the Pharmacopeia.
It is an undoubted fact that the ordinary physician has never seen the inside of a copy of the Pharmacopeia. It is likewise certain that pharmacopeial preparations are used in prescriptions much less frequently than they would be if the practicing physician had a good working knowledge of the preparations recommended by the book. Instead of a knowledge of those drugs and their efficacy or inefficacy, he has an acquaintance with the ethical or purely proprietary preparations of one or another manufacturing firm. He has probably not been taught while he was getting his medical training that drugs can be found in the Pharmacopeia, and mixtures of these can be found in its companion, the National Formulary, which will meet any emergency, and with