A History of Hindu Chemistry from the Earliest Times to the Middle of the Sixteenth Century A.D. v1.c12.t5.52

v1.c12.t5.52

¹ A few more recipes are given, in all of which orpiment plays an important part; the one quoted below from Rasendra-sárasamgraha will yield the "ash" of tin in the shape of an oxide: "Melt tin in an earthen pot and to the molten metal add an equal weight of powdered turmeric and Ajowan (Ptychotis ajowan) and cumin seeds, and afterwords the ashes of the bark of Tamarindus Indicus and Ficus religiosus and continue stirring over fire. The tin will be reduced to ashes."