[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.c12.t2.41 # A History of Hindu Chemistry from the Earliest Times to the Middle of the Sixteenth Century A.D. v1.c12.t2.41 A History of Hindu Chemistry from the Earliest Times to the Middle of the Sixteenth Century A.D. v1.c12.t2.41 - **Language:** English ### [v1.c12.t2.41](https://indike.org/pramana/ins.science.ray-1902.v1.c12.t2.41) Take blue vitriol and one-fourth its weight of borax and soak the mixture in the oil expressed from the seeds of \*pongamia glabra\* for one day only and then place it in a covered crucible and heat in the charcoal fire—by this process an essence is obtained from it of the beautiful appearance of coccinella insect.¹ - [Previous: v1.c12.t2.40](https://indike.org/pramana/ins.science.ray-1902.v1.c12.t2.40) - [Next: v1.c12.t2.42](https://indike.org/pramana/ins.science.ray-1902.v1.c12.t2.42) - [Up: v1.c12.t2](https://indike.org/pramana/ins.science.ray-1902.v1.c12.t2) --- Source: [https://indike.org/pramana/ins.science.ray-1902.v1.c12.t2.41](https://indike.org/pramana/ins.science.ray-1902.v1.c12.t2.41) · Pramāṇa