Proceedings of the Twentieth Annual Convention of the Association of Official Agricultural Chemists

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Excerpt from Proceedings of the Twentieth Annual Convention of the Association of Official Agricultural Chemists: Held at Washington, D. C., November 19, 20, and 21, 1903Many of the colors contain metallic constituents, as in the triphenylmethane derivatives, especially the greens, such as malachite green, iodin green, ethyl green, Victoria green, etc., which contain a double chlorid of zinc in combination with the organic matter. Some of the acridines and thiazines also contain zinc and naphthol green B contains iron.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.