Minerals and Metals in Ancient India v2.c44.s6.24

v2.c44.s6.24

Ever since the days of Vāgbhaṭa the medicinal use of metallic preparations went on increasing. This was witnessed and recorded by Al-Biruni. Vrinda’s Siddhayoga (AD 1000) mentioned many metallic preparations such as ‘killed’ or oxidised iron, killed copper, a Nāgārjuna-varti, the reaction product of copper and sulphur : parpaṭitāmram, of mercury and sulphur: rasāmṛta-cūrṇam, etc. Vrinda recorded that नागार्जुनन लिखिता स्तम्भे पाटलीपुत्रके nāgārjunena likhitā stambhe pāṭaliputrake (Siddhayoga, LX. 148-149)