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The Invention of Lithography
img img The Invention of Lithography img Chapter 52 CHEMICAL PRINT ON METAL PLATES
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Chapter 52 CHEMICAL PRINT ON METAL PLATES

All metals have great inclination for fats; but if they are quite clean, being ground with pumice, for instance, or rubbed-down with chalk, they can be prepared like a stone, that is, they acquire the property of resisting oil color, thus becoming available for chemical printing.

Iron and zinc can be prepared like the stone with aquafortis and g

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