History of Technology in India, Vol. I: From Antiquity to c. 1200 A.D. v1.c18.s2.2

v1.c18.s2.2

In ‘Uṣakadigana’, Uṣaka (Alkaline earth), Saindhava (Rock salt), Silajatu (Bituman), Kāśīśadvaya (Kasisal Puspaka Sisa) and Tutthaka (Blue Vitriol) are included. In ‘Maṇi group’, Mukta (pearl), Vidruma (Coral), Vajra (Daimond), Indra (Sapphire), Vaidūrya (Cat’s eye) and Sphaṭika (Quartz) are enumerated alongwith their properties. In Lavaṇa group’ - Saindhava, Sāmudra Viḍa, Sauvarcala, Romaka and Audbhida varieties of salt are included alongwith a brief description of each variety (SS. Su. 46/346-351). Further the properties of Ṭaṅkana (Borax (SS. Su. 46/359) are also found described here.