NOME III. CORSILITE. 



Silex . : . . . 50 



Argil 21 



Magnesia ... 6 



Lime 13 



Oxydkof iron . . 5 50 



Oxyd of copper . 1 10 



Oxyd of chrome . 7 50 



104 10 



The increase of weight arises from the oxygen, 

 which has been absorbed by the metallic oxyds 

 during the operation. 



In his recent publication, Haiiy places the Diaiiage. 

 green diallage as a variety of the strahlstein 

 of the Germans, while he regards the metal- 

 loid diallage, or that with metallic splendour, 

 as the schiller spar and Labrador hornblende 

 :>f many mineralogists, the schillerstein of Wer- 

 ner, and the bronzit of Karsten. He has also 

 found a palpable transition from the fairest green 

 to the grey metallic splendour*. As this in- 

 teresting substance rivals the gems in beauty, its 

 description will not be found prolix. 



The base of this rock has, by Saussure, been 

 called a jad ; by Werner, a compact felspar; by j a( j, 

 Haiiy, from its toughness, a tenacious felspar. 



he substance called jad, has been recently di- 



* Tableau comparatif, p. 46. 

 VOL. II. G 



