Excerpt from Chemistry of Materials of the Machine and Building Industries The references to literature, from which a considerable amount Of the material Of the text has been drawn, have been indicated in the footnotes and listed at the ends Of the chapters in order that the student may have recourse to them to extend the study Of the subject when this is desired. An effort has been made in all cases to acknowledge the source Of information Obtained from these writings, and if any such acknowledgment has been omit ted, it has not been done designedly. 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.