CLASS II. OfcDERS. 395 



CHARACTERS OF THE ORDERS OF CLASS II. 



I. OEDER. HALOIDE. 



Non-metallic. 

 Streak uncoloured. 

 H. = 1-5 ... 5-0. 

 G. = 2-2 ... 3-3. 



Pyramidal or prismatic : H. == 4-0 and less, 

 cleavage imperfect, in oblique directions. 

 Tessular : H. = 4-0. 

 Cleavage monotomous, eminent : G. = 2-4 



and less. 



H. under 25 : G. = -4 and less. 

 G. = 2-4 and less : H. under 2-5, no re- 

 sinous lustre. 



