Lanterna Rally

Author: John Mitchell

Publisher: Forgotten Books

Published: 2017-10-12

Total Pages: 458

ISBN-13: 9780266241874

Excerpt from Manual of Practical Assaying: Intended for the Use of Metallurgists, Captains of Mines, and Assayers in General, With a Copious Table, for the Purpose of Ascertaining in Assays of Gold and Silver the Precise Amount, in Ounces, Pennyweights, and Grains, of Noble Metal Contained in One These considerations, coupled with the paucity of any knowledge of assaying, excepting that confined to a very limited number of persons, induced the author of the following pages to turn a considerable amount of his attention to this subject, more especially as much difficulty was experienced in not having a suitable text-book for the use of his pupils. A portion of the following pages was drawn up as a Manual for such a purpose; but on consideration, it was thought the extension of such a work was so much needed, that it was determined to alter the original plan as far as was consistent with the complete carrying out the object in view, viz.: the production of a Manual embodying information in every branch. Of assaying, either by the wet or the dry processes. The following is a sketch of the manner in which this is accomplished: the author having followed the excellent arrangement of Berthier as closely as possible, from whose work also much matter that suited these pages, and which it would have been useless to re write, has been inserted. Firstly, the Mechanical and Chemical Operations of Assaying are treated in full, inclusive of a description of the apparatus required. 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.