Excerpt from Review of American Chemical Research, Vol. 12 Provisional Methods for Copper, Lead and Zinc of the Com mittee on Uniformity in Technical Analysis of the Western Association of Technical Chemists and Metallurgists. Chem, Eng, 2, 287 - 290. - These are the methods referred to in a recent abstract (this Journal, 27, R 657) as having been submitted, with an ore sample, to a number of chemists for comparative tests. 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.