THIRTY-SECOND SPECIES. i . - • Rock Soap. : . .v ! ' ? a ’ j ’ ■ - ■.. ~ r ' r- j . i t . , ’ J "7 Bergfeife.—Werner. '■ • * • >; *' ' - ■ a: & Crenji, p. 185. Id. Wid• p. 436- Emm. t. I. p. 360 Le favon de montagne, Broch. 1.1. p. 453. .* 1 4 " ‘ External Charnfters. Its colour is pitch or brownilh black. Is maffive and diffeminated. Dull. Fradure fine earthy. Fragments indeterminately angular, blunt edged. Ppaque. Does not foil. Writes as well, if not better, than drawing flate. Streak fhining and refinous. Fery foft. Completely mild, i
