A History of Hindu Chemistry from the Earliest Times to the Middle of the Sixteenth Century A.D. v1.c18.s3.5
A History of Hindu Chemistry from the Earliest Times to the Middle of the Sixteenth Century A.D. v1.c18.s3.5
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v1.c18.s3.5
The ignorant goldsmiths explain this blackening by supposing the stain of the black steel hammer to adhere to the surface of gold.