Minerals and Metals in Ancient India v2.c44.s2.3

v2.c44.s2.3

tin, lead and copper may be cleaned by alkali and acid water whereas iron and *kāmsya*, copper alloy (could it mean brass also as suggested by Roy, 1946:108? Brass was mentioned as *riti* by Caraka and Manu) should be cleaned by ash and water. Yājñavalkya advised the kings to use copper plates to write deeds (*Ācāra*, 318-320).