Excerpt from Arsenic and Its Compounds: Arsenic, Arsenic Trioxide, Arsenic Chloride, Copper Arsenite, Copper Aceto Arsenite, Arsine, Cacodylic Acid, Ethyl Arsine, Cacodyl, General Information, Industrial Health Aspects, Industries and Occupations, Selected Abstracts, Selected ReferencesSamples of American smoking and plug tobacco have been examined for arsenic, and found to contain from six to thirty parts per million, or from to grain of arsenic trioxide per pound.Approximately half of the arsenic in pipe tobacco is evolved in the smoke, and about half of that in plug tobacco is soluble in water.About the PublisherForgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.comThis 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.