154 



CHARACTERISTIC. 



CLASS I. 



I. ORDER. 



Names. 



Hardness. 



1. 



2. 



HORN SILVER. 



Hexahedral Pearl-Kerate. M. 

 Chloride of Silver. 



COMMON SALT. 



Hexahedral Rock-Salt. M. 

 Chloride of Sodium. 



3. IT CUBE-ORE. 



Hexahedral Lirocone-Malachite. M. 

 Arseniate of Iron. 



4. VITREOUS SILVER. 



Hexahedral Silver-Glance. M. 

 Sulphuret of Silver. 



5. IT GALENA. 



Hexahedral Lead- Glance. M. 

 Sulphuret of Lead. 



6. IT NATIVE COPPER. 



Octahedral Copper. M. 



7. IT NATIVE SILVER. 



Hexahedral Silver. M. 



s. IT ANALCIMET" 



Hexahedral Kouphone-Spar. M. 

 9. IT TROOSTITE. 



Ferruginous Silicate of Manganese 

 Thomson. Silicate of Zinc. Va- 

 nuxem and Keating. 



10. BRIGHT WHITE COBALT. 

 Hexahedral Cobalt-Pyrites. M. 

 Arsenical Cobalt. 



1-0...1-5. 



2-0. 

 2-0.. .2-5. 



2-5. 

 2-5. ..3-0. 



U it 



5-5. 



11. 



LEUCITE. 



Trapezoidal Kou phone- Spar. M. 

 12. IT IRON PYRITES. 



Hexahedral Iron- Pyrites. M. 

 Bisulphuret of Iron. 



5-5. ..6-0. 

 6-0.. .6-5. 



