Excerpt from The Cyanide Industry: Theoretically and Practically Considered Chemical industries are in a high degree artificial and progressive. (berthelot: Opening speech at the International Congress of Chemistry, Paris, IF the condition of chemical industry at the beginning and at the end Of the nineteenth century be compared, one is immediately impressed with the immense progress which has been accomplished. Chemical industry, at the beginning, being for the most part based on a more or less crude empiricism, could not hope for better results than those brought about either through accident or through long experience. 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.