[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) › v1.c14.s1.2 # A History of Hindu Chemistry from the Earliest Times to the Middle of the Sixteenth Century A.D. v1.c14.s1.2 A History of Hindu Chemistry from the Earliest Times to the Middle of the Sixteenth Century A.D. v1.c14.s1.2 - **Language:** English ### [v1.c14.s1.2](https://indike.org/pramana/ins.science.ray-1902.v1.c14.s1.2) "Rasaka" is mentioned in Rasārnava as the mineral which turns copper into gold (p. 71). We have also in the succeeding couplets a process described for the reduction of the ore. This process is so elaborately given in R. R. S. that it may be quoted almost \*verbatim\* in any treatise on modern chemistry; it is practically the same as distillation \*per descensum\*—the flame of bluish tint issuing from the mouth of the crucible indicates the combustion of carbon monoxide, so often observed in metallurgical operations.¹ (See p. 88). - [Previous: v1.c14.s1.1](https://indike.org/pramana/ins.science.ray-1902.v1.c14.s1.1) - [Next: v1.c14.s1.3](https://indike.org/pramana/ins.science.ray-1902.v1.c14.s1.3) - [Up: v1.c14.s1](https://indike.org/pramana/ins.science.ray-1902.v1.c14.s1) ## Cites (1) - [Rasārṇava](https://indike.org/pramana/in.med.rasa.siddha.rasarnava) — Sanskrit --- Source: [https://indike.org/pramana/ins.science.ray-1902.v1.c14.s1.2](https://indike.org/pramana/ins.science.ray-1902.v1.c14.s1.2) · Pramāṇa