A History of Indian Medical Literature v4.c63.576

v4.c63.576

98 A Capalanirṇaya by Narendranāthamitra is appended to this chapter; the author identifies capala as the element selenium. See on capala, which has always been rare and very difficult to identify: D. Joshi (1991a): 76: it is regarded as a bismuth or tin ore, by a few as selenium. P.C. Rāy (1956: 171): capala is possibly a sulphidic mineral. Sources quoted in this section are: Rasakāmadhenu, Rasamaṅgala, Rasaratnasamuccaya, Rasārṇava and Rasendracūḍāmaṇi. Narendranātha was Sadānanda's teacher (see 6.37–38).