History of Chemistry in Ancient and Medieval India, Incorporating the History of Hindu Chemistry by Acharya Prafulla Chandra Ray c36.s7.21

c36.s7.21

Another work of the Iatrochemical Period, Rasendrasarasamgraha, describes the following process for obtaining the *svetabhasma* or white ash. "Rub mercury repeatedly with *pamsu* salt (i.e., *audbhida* salt) 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, and then fire is urged for an entire day. The white deposit in the neck of the bottle is to be collected."