A History of Hindu Chemistry from the Earliest Times to the Middle of the Sixteenth Century A.D. v1.c21.5

v1.c21.5

Another work of the Iatro-chemical period, "Rasendrasārasamgraha" describes the following process for obtaining the *svetabhasma* or white ash. "Rub mercury repeatedly with *pāmsu* salt (i. e. audbhida salt : see p. 243) and the juice of *Euphorbia neriifolia*; place the mixture inside an iron bottle, the mouth of which is closed with a piece of chalk. The bottle is embedded in a mass of salt (cf. the salt-bath, p. 123) and then fire is urged for an entire day. The white deposit in the neck of the bottle is to be collected."¹