Excerpt from A Treatise on Chemistry, Vol. 3: The Chemistry of the Hydrocarbons and Their Derivatives, or Organic Chemistry; Part I Later on, towards the sixteenth century, the cultivators of this science, as we have seen,1 exhibited activity mainly in two directions, in the first place in the prosecution of the branch science of metallurgy, and secondly, in the development Of iatro chemistry. III these branches, and especially in the latter, it was, however, the inorganic division of the science which made the most rapid strides, because, in opposition to the practice of the Old school, the use Of metallic preparations as medicines was largely introduced. At the same time the study of organic compounds, and especially of the active principles of organic bodies, was not entirely neglected. Thus during this period benzoic acid, succinic acid, wood-vinegar, milk-sugar, and various ethers were discovered. 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.