Note 7 — BOOK VIII.
Herbert Hoover translation
[Pg 278][7] Bearing in mind that bituminous cadmia contained arsenical-cobalt minerals, this substance "resembling pompholyx" would probably be arsenic oxide. In De Natura Fossilium (p. 368). Agricola discusses the pompholyx from cadmia at length and pronounces it to be of remarkably "corrosive" quality. (See also note on p. 112.)