Excerpt from A Treatise of Therapeutics and Pharmacology, or Materia Medica, Vol. 1 of 2 There are a few abbreviations used throughout the work which require explana tion. The letters U. S., attached to a medicinal name or process, are to be under stood as referring to the authority of the existing United States Pharmacopoeia; Br., to that of the first British Pharmacopoeia published in 1864; and Land, Ed, Dub., to that of the last Pharmacopoeias published by the London, Edinburgh, and Dublin Colleges respectively, but now superseded by the British. In an Appendix will be found tables showing the differences between the British Pharmacopoeia recently published, and the first edition of that work, published in 1864, which has been recognized throughout this Treatise as the British standard. 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.