[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) › c25.14 # History of Chemistry in Ancient and Medieval India, Incorporating the History of Hindu Chemistry by Acharya Prafulla Chandra Ray c25.14 History of Chemistry in Ancient and Medieval India, Incorporating the History of Hindu Chemistry by Acharya Prafulla Chandra Ray c25.14 - **Language:** English ### [c25.14](https://indike.org/pramana/ins.science.ray-1956.c25.14) \*Extraction of the Essence of Copper Pyrites:\*—\*Makshikam\* (pyrites), digested hundred times with juice of plaintain leaves, and then steeped for three days in oil, clarified butter and honey, and then heated strongly in a crucible yields its essence. - [Previous: c25.13](https://indike.org/pramana/ins.science.ray-1956.c25.13) - [Next: c25.15](https://indike.org/pramana/ins.science.ray-1956.c25.15) - [Up: c25](https://indike.org/pramana/ins.science.ray-1956.c25) --- Source: [https://indike.org/pramana/ins.science.ray-1956.c25.14](https://indike.org/pramana/ins.science.ray-1956.c25.14) · Pramāṇa