OF THE ASBESTINE EARTH. 187 



EXP. 8. In the flame of a blow-pipe, whe- 

 ther alone or mixed with alkali, microcofmic fait, 

 or borax, it exhibits the fame appearances as the 

 Tarentaifian ; except that it difcovers a greater 

 proportion of iron in its compolltion. 



EXP. 9. Purfuing the method of analyfis de- 

 cribcd before, Exp. 6, the centenary produced, 

 of terra ponderofa nothing; but 13.9 of chalk; 

 17.2 of aerated magnciia; 27 of clay; 64offl- 

 Jiccous earth; and 2.2 of calx of iron. 



iv. Of the Jljleflos of Siuartvik rcfcmbling 

 Steatites^ 



Wz are now to gi ve our attention to another va- 

 jricty of the Swart vik afbcflos, which forms as it 

 were a link between the afbcflos already dcfcrib- 

 ed, and the flcutitcs which is found in the fame 

 place. It refemblcs the ftcatitcs in its green colour, 

 but which is rather a little paler; its furface is 

 fmooth andfliining ; can be fcrapcd with the nail 

 into a white powder; it differs however in the ar- 

 rangement of its parts, being ftriated parallel and 

 longitudinally, and capable of divifion into the 

 fined white threads, which were before fo clofc- 

 ly united, that their joining was not percepti- 

 ble. 



EXP. 



