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444 TALC GENUS; ’ Constituent Parts. A. of Swarlich. A of Tarentaife. A. 0! Corias in Sjialrf Silica 64,0 64,0 7,20 Magnefia * 17,2 18,6 12,9 Alumina 2 >7 3>3 *3>3 L:me 13.9 6,9 10,5 Barytes 6,0 Iron 2,2 1.a 2,2 100 ICO 99>*9 According to Bergman. It has been lately analyfed by Chenevix, who ob- tained the following refult. Silica 59-° Magnefta 2 J,o Lime 9.4 Alumina 3>° Iron 3 >i Lofs I.T 100 Patrin's Mineralogie, and Nouveau Di£tionn»i #e D’Hiltoire Naturelle, t. i. p. 309^ Gtognoftt
