[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) › c84.68 # History of Chemistry in Ancient and Medieval India, Incorporating the History of Hindu Chemistry by Acharya Prafulla Chandra Ray c84.68 History of Chemistry in Ancient and Medieval India, Incorporating the History of Hindu Chemistry by Acharya Prafulla Chandra Ray c84.68 - **Language:** English ### [c84.68](https://indike.org/pramana/ins.science.ray-1956.c84.68) 37 The (above mentioned) powder should be pure. Add zinc to the powder and wash repeatedly by castor oil (\*od gi blo.gros mar.khu\*), and karanja oil ('\*od ki blo gros mar khu\*—literally means enkindling oil—castor oil. It may be a kind of medicine). - [Previous: c84.67](https://indike.org/pramana/ins.science.ray-1956.c84.67) - [Next: c84.69](https://indike.org/pramana/ins.science.ray-1956.c84.69) - [Up: c84](https://indike.org/pramana/ins.science.ray-1956.c84) --- Source: [https://indike.org/pramana/ins.science.ray-1956.c84.68](https://indike.org/pramana/ins.science.ray-1956.c84.68) · Pramāṇa