[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) › c15.34 # History of Chemistry in Ancient and Medieval India, Incorporating the History of Hindu Chemistry by Acharya Prafulla Chandra Ray c15.34 History of Chemistry in Ancient and Medieval India, Incorporating the History of Hindu Chemistry by Acharya Prafulla Chandra Ray c15.34 - **Language:** English ### [c15.34](https://indike.org/pramana/ins.science.ray-1956.c15.34) This indicates that the knowledge of the purification of gold and silver by alloying with lead was known in Kautilya's time. This is comparable to the modern process of cupellation. - [Previous: c15.33](https://indike.org/pramana/ins.science.ray-1956.c15.33) - [Next: c15.35](https://indike.org/pramana/ins.science.ray-1956.c15.35) - [Up: c15](https://indike.org/pramana/ins.science.ray-1956.c15) --- Source: [https://indike.org/pramana/ins.science.ray-1956.c15.34](https://indike.org/pramana/ins.science.ray-1956.c15.34) · Pramāṇa