Excerpt from American Journal of Pharmacy, Vol. 30 of 6: Published by Authority of the Philadelphia College of Pharmacy Some two years since it occurred to the writer that various liquids might be well and easily purified and isolated, during the processes for their production, by washing the vapor as produced, just as fixed gases have long been washed and purified. The first practical application of this method was in the manu facture of ether, wherein the vapors from the still were made to pass first through milk of lime, then through a cooler kept at a. Fixed temperature, and then through dry chloride of calcium. 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.