[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) › c15.45 # History of Chemistry in Ancient and Medieval India, Incorporating the History of Hindu Chemistry by Acharya Prafulla Chandra Ray c15.45 History of Chemistry in Ancient and Medieval India, Incorporating the History of Hindu Chemistry by Acharya Prafulla Chandra Ray c15.45 - **Language:** English ### [c15.45](https://indike.org/pramana/ins.science.ray-1956.c15.45) "Pure gold combined with an equal quantity of lead and heated with rock salt to the melting point under dry cow-dung becomes the basis of gold alloys of blue, red, white, yellow, parrot and pigeon colours." \[88 - [Previous: c15.44](https://indike.org/pramana/ins.science.ray-1956.c15.44) - [Next: c15.46](https://indike.org/pramana/ins.science.ray-1956.c15.46) - [Up: c15](https://indike.org/pramana/ins.science.ray-1956.c15) --- Source: [https://indike.org/pramana/ins.science.ray-1956.c15.45](https://indike.org/pramana/ins.science.ray-1956.c15.45) · Pramāṇa