This Stone is usually found in Gold Mines in Africa (a) Boet. de Lap. & G. and Asia. Of two kinds; The fixed, which being put in to the fire, keeps its colour; The Not fixed, also in Ger(b) From Cap. 123. to 137. & 141. many. (a) Hereof are sometimes made Knife-Hafts and Spoons. But especially that most excellent BLEW, called ULTRAMARINE. The manner of preparing it, is very largely and exactly described by Boetius. (b) The powder hereof given to the quantity of ʒss (or more or less) is an innocent and useful Cathartick. (c) (c) Brassavolus. It will sometimes work by Vomit. Hath been successfully used in Quartans and Malignant Feavers. And yields a Narcotick Oil. (d) (d) Fioravantus.