20 
property said to be in Schorl, Bergm. 9.124. Kirw. 1.272. 
The latter observes that Bergman thought Lime essential to 
Schorl in the analysis of that of Mount Albans, which Mr. 
Kirwan says was probably Hornblende. 
Mr. Kirwan asserts that Schorl was named so from its 
brittleness ; others say from the village Schorlow where it 
was first noticed. 
Analyses of Tourmalines by Bergman. 
Of Tyrol. Of Ceylon. OfBrazil. 
Aregill . e e 42 e e e 39 e e & 50 
Silex ° e e AO ® ° ° 3 7 e e' 8 34 
Caleareous: Barth 12h ae ae. aad 
Bron a ee ee ee Or oo oat ay 
100 ; 100 100 
=e eee = 
Analysis of the Tourmaline of Brazil by Vauquelin. 
Dilexcee cack eh OOD 
Alumine;..- . . 39°00 
Lime WR re nee nol! 
Oxide of Iron |, 42°50 
Oxide of Manganese 2°00 
Water 2 Yarns ica eb 
100°00 
—— 
