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Scientific American, Vol. 67, No. 25 (December 1892) (1892)

leaf 12

An illustration from Scientific American, Vol. 67, No. 25 (December 1892), 1892, leaf 12
Scientific Smetirati. December 17, 1892. j 395 & … KANSAS CITY, BIO. THE COPYING PAD-HOW TO MAKE An indestructrble product, impervious to water and acids, for room linings and flooring. Especially useful and how t o use; with an engraving. Practical directions The AURARHONE in chemical works for lining Digesters. how to prepare the gelatine pad,…

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