The American Journal Of Pharmacy Vol 85 Classic Reprint PDF Download

Excerpt from The American Journal of Pharmacy, Vol. 15 The later official process of the new British Pharmacop ia is perhaps even more objectionable; first; from the excessive use of hydrochloric acid; second, from the use of coarse powder; third, from the excessive use of rectified spirit; fourth, from directing the product to be dried in a stove; and fifth, from a want of definite detail, and a peculiar involved and inverted style, which requires analysis in order to be understood, and is then neither definite nor clear. These criticisms upon the only two officinal formulas for this substance were based upon a general experience in its preparation on a large scale, and in order to give them force and applicability on the scale of the Pharmacop ias, a number of experiments were carefully made, the most important results of which may be summed up as follows. The first series proved that a given lot of about 200 pounds of the root contained accurately 4.1 per cent. of the resin, when carefully and thoroughly exhausted. The second series proved that exhaustion was always difficult and generally imperfect with a coarse powder; and that the finer the powder, the more easy, the more perfect, and consequently the more economical was the exhaustion. 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."