Book excerpt: Excerpt from Workshop Receipts: For the Use of Manufacturers, Mechanics and Scientific Amateurs But during this time much additional information has come to hand, many improvements have been made in the Arts, new processes have been invented notably in Photography, and the general progress of twenty years has made much of the matter in the original book obsolete. The present edition has been carefully revised and brought up to date, and it is hoped that the high reputation gained by the first edition will be maintained by the second. 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.