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The Invention of Lithography
img img The Invention of Lithography img Chapter 12 GENERAL PROPERTIES OF ACIDS
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Chapter 12 GENERAL PROPERTIES OF ACIDS

Probably most lithographers still believe, as I did once, that the etching with acids prepares the stone, and that the succeeding application of gum merely increases this preparation. Countless experiments have taught me that the exact reverse is true. Gum arabic and a few other similar bodies are the true factors in preparation, and the acids simp

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