[Pramāṇa](https://indike.org/pramana/) › [Studies](https://indike.org/pramana/ins) › [Science, technology and education](https://indike.org/pramana/ins.science) › [The Materia Medica of the Hindus, compiled from Sanskrit Medical Works](https://indike.org/pramana/ins.science.dutt-1877) › c4.s4.31 # The Materia Medica of the Hindus, compiled from Sanskrit Medical Works c4.s4.31 The Materia Medica of the Hindus, compiled from Sanskrit Medical Works c4.s4.31 - **Language:** English ### [c4.s4.31](https://indike.org/pramana/ins.science.dutt-1877.c4.s4.31) Metals and metallic compounds are reduced to powder by various processes. The operation is called \*márana\*, which literally means killing or destruction of metallic character but practically a reduction to powder, either in the metallic state, or after conversion into an oxide or a sulphide. Various processes for the calcination of different metals are described in Sanskrit works on the subject. I will not burden these pages with a detailed account of these but shall only describe modes of preparation followed at the present day. - [Previous: c4.s4.30](https://indike.org/pramana/ins.science.dutt-1877.c4.s4.30) - [Next: c4.s4.32](https://indike.org/pramana/ins.science.dutt-1877.c4.s4.32) - [Up: c4.s4](https://indike.org/pramana/ins.science.dutt-1877.c4.s4) --- Source: [https://indike.org/pramana/ins.science.dutt-1877.c4.s4.31](https://indike.org/pramana/ins.science.dutt-1877.c4.s4.31) · Pramāṇa