ORDER IX. GENERA AND SPECIES. 443 



V. MERCURY. Tessular, fluid. 

 Not malleable. 

 Colour white. 

 H. = 0-0 ... 3-0. 

 G. = 10-5 ... 15-0. 



1. DODECAHEDRAL. Tessular. 



Cleavage, none. 

 Colour silver-white. 

 H. = 1-0 ... 3-0. 

 . G. = 10-5 ... 12-5. 



Dodecahedral Mercury or Native Amalgam. J. ii. 431. 



2. FLUID. Fluid. 



Colour tin-white. 



H. = 0-0. 



G. = 12-0 ... 15-0. 



Mercury. ii. 432. 



VI. SILVER. Tessular. 



Ductile. 



Colour silver-white. 

 H. = 2-5 ... 3-0, 

 G. = 10-0 ... 10*5. 



1. HEXAHEDRAL. Tessular. 

 Cleavage, none. 



Silver. ii. 433. 



VII. GOLD. Tessular. 



Colour gold-yellow. 

 H. = 2-5 ... 3-0, 

 G. = 12-0 ... 200. 



1. HEXAHEDRAL. Tessular. 

 Cleavage, none. 



Gold. ii. 436, 



