History of Chemistry in Ancient and Medieval India, Incorporating the History of Hindu Chemistry by Acharya Prafulla Chandra Ray c36.s7.19

c36.s7.19

According to Hindu alchemists, there are four kinds of the ash (*bhasma*) of mercury; namely black (*kajjali*), red (*vermilion*), white and yellow. The white variety is often spoken of as *rasakarpura* or camphor of mercury; it is often found to be almost pure calomel and sometimes a mixture in indefinite proportions of calomel and corrosive sublimate.