[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) › c12.28 # History of Chemistry in Ancient and Medieval India, Incorporating the History of Hindu Chemistry by Acharya Prafulla Chandra Ray c12.28 History of Chemistry in Ancient and Medieval India, Incorporating the History of Hindu Chemistry by Acharya Prafulla Chandra Ray c12.28 - **Language:** English ### [c12.28](https://indike.org/pramana/ins.science.ray-1956.c12.28) A notable variety belonging to this colouring group is represented by a number of fine earthenware bangles usually black in colour, sometimes mottled white, but all characterised by the vitreous texture At Harappa, a dark red variety of earthenware bangles has been found. The chemical analysis of one of the specimens by Sana Ullah reveals . - [Previous: c12.27](https://indike.org/pramana/ins.science.ray-1956.c12.27) - [Next: c12.29](https://indike.org/pramana/ins.science.ray-1956.c12.29) - [Up: c12](https://indike.org/pramana/ins.science.ray-1956.c12) --- Source: [https://indike.org/pramana/ins.science.ray-1956.c12.28](https://indike.org/pramana/ins.science.ray-1956.c12.28) · Pramāṇa