[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.s16.10 # A History of Hindu Chemistry from the Earliest Times to the Middle of the Sixteenth Century A.D. v2.c32.s16.10 A History of Hindu Chemistry from the Earliest Times to the Middle of the Sixteenth Century A.D. v2.c32.s16.10 - **Language:** English ### [v2.c32.s16.10](https://indike.org/pramana/ins.science.ray-1902.v2.c32.s16.10) Empirical and arbitrary scales of weight were adopted as standards. A ruby occupying the volume of a guñja (abrus precatorius) may be equal in weight to 10, 7 and 3 guñjas respectively. A ruby of the volume of a sṛgālakola (a kind of jujube) should weigh 12, 8 and 7 guñjas respectively. Again, a ruby of the volume of an āmalakī (phyllanthus emblica) should weigh 30, 20 and 16 māshās respectively.\* In each case the gem which is of greater weight is superior in quality and the value thereof is enhanced in proportion.† - [Previous: v2.c32.s16.9](https://indike.org/pramana/ins.science.ray-1902.v2.c32.s16.9) - [Next: v2.c32.s16.11](https://indike.org/pramana/ins.science.ray-1902.v2.c32.s16.11) - [Up: v2.c32.s16](https://indike.org/pramana/ins.science.ray-1902.v2.c32.s16) --- Source: [https://indike.org/pramana/ins.science.ray-1902.v2.c32.s16.10](https://indike.org/pramana/ins.science.ray-1902.v2.c32.s16.10) · Pramāṇa