This section has been written for the purpose of presenting the leading data of Pharmacology in a compact, concise form. In the average text-book on any subject, the essential facts are not infrequently submerged in a sea of speculation, discussion, and rehearsal of evidence, all of which has its great value, especially for the weighing of mooted points; but there are also times when the immediate determining of the essential fact is more important. For those times this section will prove valuable.

This section is to be used as an aid to one's work - not as a substitute for that work. It is not to be assumed that any earnest student would delude and cheat himself by presenting this data in lieu of that of his own delving. On the contrary, he will use the information thus conveniently placed at hand for correctly orienting himself when confronted with difficulties, or for adding to his sum of information.

Readers of the literature of Pharmacology must be impressed by the lack of uniformity among writers concerning the pharmacodynamics of various drugs. Such disagreements arise from the diversity of conditions surrounding the experimentation with drugs, and therefore demand that in this science, as in all others, our conclusions must be tentative only. In the meanwhile, we must pin our faith somewhere, selecting such conclusions as seem warranted by the present weight of evidence. The faith of this Manual is largely founded on "Cushny's Pharmacology," with such minor modifications as seem justified by personal experience.

Pharmacology 59

Crimson = stimulation.