CATALOGUE OF MINERALS. 



27 a . Anthracite* 

 27 b . Bituminous Coal * 

 27. Jet* 

 27 d . Lignite* 



28. Graphite * C 6 



B. SlILPHURETS, ARSEffltJRETS, ETC. 



I. BINARY COMPOUNDS. 



1. Compounds of Elements of the Arsenic Group with 



one another. 



29. Realgar As S 4 



30. Orpiment* As z S* 3 



31. Dimorphine As*S 3 3 



32. Bismuthine* Bi S 3 



33. Stibnite * Sb 2 & 3 



