TAB. LIX. 



SILEX Analcimus, 

 Analcime. 



Class 2. Earths. Order 1. Homogeneous. 

 Gen. 4. Silex. Spec. 16. Analcime. 



Spec. Char. Primitive form, the cube. Spec. Grav. 

 about 2. Electricity difficult to excite by friction. 

 Vitreous. Fusible per se into a transparent glass. 



Syn. Vesuvian or white Garnet. Kirw. v. 1. 285. 



Wurfel zeolith. Emmerl. v. 1. 205. 



La zeolithe cubique. Brock, v. I. 304. 



Analcime. Haiiy, v. 3. 1 80. 



Vesuvian or white Garnet* is the only substance men- 

 tioned in Kirwan that at all agrees with this species f i but 

 in this, as in many other substances described by that great 

 author, he does not observe whether he had ever seen any 

 thing like it found in Great Britain. 



* The substance commonly called Vesuvian should not be confounded with 

 this, as it is a very different substance which is called 1 do erase by Haiiy, 2, 

 574. and is mostly of a dark colour, but is probably included under Mr. Kir™ 

 wan's ] 8-, 36-, and 56-sided crystals of Vesuvian Garnet. 



f Including only his 24-sided crystals. 



