[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) › c12.s1.4 # History of Chemistry in Ancient and Medieval India, Incorporating the History of Hindu Chemistry by Acharya Prafulla Chandra Ray c12.s1.4 History of Chemistry in Ancient and Medieval India, Incorporating the History of Hindu Chemistry by Acharya Prafulla Chandra Ray c12.s1.4 - **Language:** English ### [c12.s1.4](https://indike.org/pramana/ins.science.ray-1956.c12.s1.4) (\*a\*) Crude copper, the first product of the smelting furnace, was too rich in sulphur to be worked up by hammering and was suitable only for casting heavy and plain objects. - [Previous: c12.s1.3](https://indike.org/pramana/ins.science.ray-1956.c12.s1.3) - [Next: c12.s1.5](https://indike.org/pramana/ins.science.ray-1956.c12.s1.5) - [Up: c12.s1](https://indike.org/pramana/ins.science.ray-1956.c12.s1) --- Source: [https://indike.org/pramana/ins.science.ray-1956.c12.s1.4](https://indike.org/pramana/ins.science.ray-1956.c12.s1.4) · Pramāṇa