Excerpt from Original Communications, Eighth International Congress of Applied Chemistry, Washington and New York, September 4 to 13, 1912, Vol. 1: Section I. Analytical Chemistry As a works control method for the quantitative estimation of small amounts of arsenic the Marsh test is obsolete; it is too tedious and too expensive. Hence has arisen the insistent demand for a rapid, accurate method, easy of manipulation. 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.