[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) › c31.7 # History of Chemistry in Ancient and Medieval India, Incorporating the History of Hindu Chemistry by Acharya Prafulla Chandra Ray c31.7 History of Chemistry in Ancient and Medieval India, Incorporating the History of Hindu Chemistry by Acharya Prafulla Chandra Ray c31.7 - **Language:** English ### [c31.7](https://indike.org/pramana/ins.science.ray-1956.c31.7) The science of mercury is to be strictly kept a secret ....if it is divulged, its efficacy is gone 70 - [Previous: c31.6](https://indike.org/pramana/ins.science.ray-1956.c31.6) - [Next: c31.8](https://indike.org/pramana/ins.science.ray-1956.c31.8) - [Up: c31](https://indike.org/pramana/ins.science.ray-1956.c31) --- Source: [https://indike.org/pramana/ins.science.ray-1956.c31.7](https://indike.org/pramana/ins.science.ray-1956.c31.7) · Pramāṇa