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Excerpt from Pharmacology and Therapeutics: For Students and Practitioners of Medicine The continued immanence of the U.S. Pharmacop ia has delayed the publication of a new edition of this work, as the author felt that the appearance of a revision which should not include the changes in the legal standard would work an injustice to many of those who should purchase the book. While the general plan of the previous edition has been adhered to, extensive alterations have been required, not only to meet the changes in the Pharmacop ia but also to keep apace with the rapid advances in the sciences of pharmacology. The articles on veronal, digitalis, pituitary, atoxyl and salvarsan have been almost completely rewritten and important alterations made in those on potassium, caffeine, dionine, ergot, ipecacuanha, magnesium, calcium, and hexamethylenamine. Some twenty substances not considered in the previous edition have received more or less extensive notice in the present one; among these may be mentioned especially, agaricin, bromural, apiol, cotarnine, chrysarobin, picrotoxin, homatropine, aspidosperma, and thiosinamin. Besides these there have been a number of minor interpolations scattered throughout the work. While the author does not feel that he should surrender his judgment as to the importance of various remedies to that of the Committee on Revision, he does believe that official substances should always be favored by the physician when not to the detriment of the patient. Moreover, for obvious reasons, it is important that a text-book for students should recognize the legal authority of the country on the subject of drugs. Therefore, while it has been deemed advisable to consider a number of unofficial drugs, because of their practical importance, it has also been necessary to include some substances of little remedial value because of their recognition by the Pharmacop ia. One innovation in the U.S. Pharmacop ia which has been followed in this work is especially worthy of note. That is the adoption of the British term "mil" for the thousandth part of a liter. This is a much more convenient as well as a more accurate term than the cumbersome "C.c." About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works."