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iö4 Muriatic Genus, Hardnefs, 4. takes an impreflion, or yields like cork to the finger, and fomewhat elaftic. Sp. gr. before it is penetrated by water, from 0,6806 to 0,9933 : an d a f ter admiflion of water, from 1,2492 to 1,3492. Briffon. If perfeftly dry, and fufficiently thick, it gives a found when ftruck. It feels meagre. Bergman and Sauflure found it fufible, though difficultly, by the blow-pipe. 4 JBergm. 169. 2 Saujf. 124. •— By Mr. Bergman’s Analyfis it contains from 36 to 62 per ct. of filex, 22 to 26 aerated mag- nefia, from 2,8 to 12,7 argill, about 3 of calx of iron, and from 10 to 12,7 aerated calx. , i3th Species. Amianthinite. Albeftartiger Strahlflein, of Wer ner, in part. Leike O. 1186. 1188. Colour, afh, or greenilh or yellowifh grey, often mixed with yellow, or red, or both, from decompofition. Form, amorphous. Luftre, of the grey part, filky, verging to the femimetallic 3. Tranfparency o. , Fradfure, prefents a confufed appearance of the foliated and fibrous, the fibres fo faint as to be fcarcely diftinguiflied, prefenting diftindt concre- tions, irregularly bundled, and in the grofs often obfcurely ilaty. Hardnefs from 2 to 4. Sp. gr. of the fpeci- men Lelke, O. 1186, that which was thepurefl; 7 was