[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) › c15.21 # History of Chemistry in Ancient and Medieval India, Incorporating the History of Hindu Chemistry by Acharya Prafulla Chandra Ray c15.21 History of Chemistry in Ancient and Medieval India, Incorporating the History of Hindu Chemistry by Acharya Prafulla Chandra Ray c15.21 - **Language:** English ### [c15.21](https://indike.org/pramana/ins.science.ray-1956.c15.21) "Copper coins shall be made up of four parts of silver, eleven parts of copper and one part of iron (\*tīkshna\*) or any other metal." (84) - [Previous: c15.20](https://indike.org/pramana/ins.science.ray-1956.c15.20) - [Next: c15.22](https://indike.org/pramana/ins.science.ray-1956.c15.22) - [Up: c15](https://indike.org/pramana/ins.science.ray-1956.c15) --- Source: [https://indike.org/pramana/ins.science.ray-1956.c15.21](https://indike.org/pramana/ins.science.ray-1956.c15.21) · Pramāṇa