[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) › c17.s3.28 # History of Chemistry in Ancient and Medieval India, Incorporating the History of Hindu Chemistry by Acharya Prafulla Chandra Ray c17.s3.28 History of Chemistry in Ancient and Medieval India, Incorporating the History of Hindu Chemistry by Acharya Prafulla Chandra Ray c17.s3.28 - **Language:** English ### [c17.s3.28](https://indike.org/pramana/ins.science.ray-1956.c17.s3.28) \*Saurashtri.\*—"Distillation of \*saurashtri\* (alum ). Alum is to be macerated in the bile of the ox one hundred times and then its essence is to be extracted by distillation—a very secret process, not to be divulged." - [Previous: c17.s3.27](https://indike.org/pramana/ins.science.ray-1956.c17.s3.27) - [Next: c17.s3.29](https://indike.org/pramana/ins.science.ray-1956.c17.s3.29) - [Up: c17.s3](https://indike.org/pramana/ins.science.ray-1956.c17.s3) --- Source: [https://indike.org/pramana/ins.science.ray-1956.c17.s3.28](https://indike.org/pramana/ins.science.ray-1956.c17.s3.28) · Pramāṇa