A History of Hindu Chemistry from the Earliest Times to the Middle of the Sixteenth Century A.D. v1.c13.s1.6
A History of Hindu Chemistry from the Earliest Times to the Middle of the Sixteenth Century A.D. v1.c13.s1.6
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v1.c13.s1.6
"Alum shales, so called, are of rare occurrence in peninsular India, and, so far as it known, the only considerable native manufacture is situated in Rājputana; but as will be gathered from what follows, the tertiary rocks of the extra-peninsular regions often contain such shales.