[Pramāṇa](https://indike.org/pramana/) › [Studies](https://indike.org/pramana/ins) › [Science, technology and education](https://indike.org/pramana/ins.science) › [History of Chemistry in Ancient and Medieval India, Incorporating the History of Hindu Chemistry by Acharya Prafulla Chandra Ray](https://indike.org/pramana/ins.science.ray-1956) › c15.48 # History of Chemistry in Ancient and Medieval India, Incorporating the History of Hindu Chemistry by Acharya Prafulla Chandra Ray c15.48 History of Chemistry in Ancient and Medieval India, Incorporating the History of Hindu Chemistry by Acharya Prafulla Chandra Ray c15.48 - **Language:** English ### [c15.48](https://indike.org/pramana/ins.science.ray-1956.c15.48) "Pure or impure silver may be heated four times with copper sulphate mixed with powdered bone (\*asthituttha\*), again four times with an equal quantity of lead, again four times with dry copper sulphate (\*sushkatuttha\*), again three times in skull and lastly twice in cow-dung." \[88, - [Previous: c15.47](https://indike.org/pramana/ins.science.ray-1956.c15.47) - [Next: c15.49](https://indike.org/pramana/ins.science.ray-1956.c15.49) - [Up: c15](https://indike.org/pramana/ins.science.ray-1956.c15) --- Source: [https://indike.org/pramana/ins.science.ray-1956.c15.48](https://indike.org/pramana/ins.science.ray-1956.c15.48) · Pramāṇa