The Scientific American 10, 3.9.1859
Messrs. Editors: You have frequently spoken of the bad effects resulting from the green colors of paper hangings containing arsenic. Those evils can be prevented by simply coating the paper with a white transparent varnish, which can be done by any practical housepainter or paperhanger. By so doing the poison is hermetically sealed, consequently the air, &c., cannot act upon it; neither will washing injure it.
- James Quaterman.
New York, Aug. 27, 1859
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