[Pramāṇa](https://indike.org/pramana/) › [Studies](https://indike.org/pramana/ins) › [Science, technology and education](https://indike.org/pramana/ins.science) › [A History of Hindu Chemistry from the Earliest Times to the Middle of the Sixteenth Century A.D.](https://indike.org/pramana/ins.science.ray-1902) › v2.c32.s2.t1.9 # A History of Hindu Chemistry from the Earliest Times to the Middle of the Sixteenth Century A.D. v2.c32.s2.t1.9 A History of Hindu Chemistry from the Earliest Times to the Middle of the Sixteenth Century A.D. v2.c32.s2.t1.9 - **Language:** English ### [v2.c32.s2.t1.9](https://indike.org/pramana/ins.science.ray-1902.v2.c32.s2.t1.9) Digestion \[of minerals\] is to be effected in the decoction of \*Dolichos uniflorus\*, \*Paspalum scrobiculatum\*, the urine of man and the acid juices of \[the fruit of\] ratan (\*Calamus rotang\*) and afterwards with the addition of the alkalies (soda, borax &c.) The operation of roasting is to be performed thrice.—Cf. the process of Rasaratnasamuchaya (R. R. S.), Bk. ii, 67-68 in Vol. i, p. 83. - [Previous: v2.c32.s2.t1.8](https://indike.org/pramana/ins.science.ray-1902.v2.c32.s2.t1.8) - [Next: v2.c32.s2.t1.10](https://indike.org/pramana/ins.science.ray-1902.v2.c32.s2.t1.10) - [Up: v2.c32.s2.t1](https://indike.org/pramana/ins.science.ray-1902.v2.c32.s2.t1) ## Cites (1) - [Rasaratnasamuccaya](https://indike.org/pramana/in.med.rasa.samuccaya.pramukha.rasaratnasamuccaya) — Vāgbhaṭa (alchemist), Sanskrit --- Source: [https://indike.org/pramana/ins.science.ray-1902.v2.c32.s2.t1.9](https://indike.org/pramana/ins.science.ray-1902.v2.c32.s2.t1.9) · Pramāṇa