[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) › c12.48 # History of Chemistry in Ancient and Medieval India, Incorporating the History of Hindu Chemistry by Acharya Prafulla Chandra Ray c12.48 History of Chemistry in Ancient and Medieval India, Incorporating the History of Hindu Chemistry by Acharya Prafulla Chandra Ray c12.48 - **Language:** English ### [c12.48](https://indike.org/pramana/ins.science.ray-1956.c12.48) The seals found at Harappa and Mohenjo-daro are coated with a smooth glassy-looking substance, resembling a glaze. No colour was detected on any of these seals. The surface coating on one of these seals was analysed with the following results by Sana Ullah: - [Previous: c12.47](https://indike.org/pramana/ins.science.ray-1956.c12.47) - [Next: c12.49](https://indike.org/pramana/ins.science.ray-1956.c12.49) - [Up: c12](https://indike.org/pramana/ins.science.ray-1956.c12) ## Linked texts (2) - [Harappā](https://indike.org/pramana/inp.site.harappa) - [Mohenjo-daro](https://indike.org/pramana/inp.site.mohenjo-daro) --- Source: [https://indike.org/pramana/ins.science.ray-1956.c12.48](https://indike.org/pramana/ins.science.ray-1956.c12.48) · Pramāṇa