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Scientific American, Vol. 37, No. 15 (1877) (1877)
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of Riga, who admin- IMPRINTING THE PATTERN BY BLOCKS istered to himself three quarters of a grain of aniline red is done in two ways, either by the block or old process, or every morning; for a period of: five weeks, without any ill by the roller or improved process. In either case each color… … *~ © 1877 SCIENTIFIC AMERICAN, INCInternet Archive · Public domain (published before 1931). Free to use for anything.
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