Excerpt from The Boston Journal of Chemistry, Vol. 15: Devoted to the Science of Home Life, the Arts, Agriculture and Medicine; January-December, 1881 As regards the work of any particular firm, it is entirely proper that the profession should watch it with the most scrupulous care, and make it clearly understood that its patronage of that firm, as of all firms, rests upon the capacity of the firm to do its work well, and upon the practical evidence that it constantly exercises this capacity. 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.