Public domain
Streaking into the mixture, and forming the marbleized pattern, the powdered components at first can be detected in the mixture; the yellow of sulfur here, the white of zinc there. Soon however, one begins to blend into the other, and before that batch is removed, every element is completely mixed i
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Credit lineStreaking into the mixture, and forming the marbleized pattern, the powdered components at first can be detected in the mixture; the yellow of sulfur here, the white of zinc there. Soon however, one b. 1941-01-01. United States. Office Of War Information, Palmer, Alfred T.. Farm Security Administration/Office of War Information Collection, Library of Congress. Public domain.
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