Excerpt from Elements of Chemistry: An American Edition In the arrangement of a work like the present, if the general principles of the science are first described, it is impossible to avoid the difficulty of introducing the names of many substances with whose history the reader cannot be supposed conversant; and by entering in the commencement on the description of individual substances, reference to the principles of affinity and the laws of constitution is continually necessary in order that the reactions of these bodies may. 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.