182 GEOLOGICAL SURVEY OF THE TERRITORIES. 



Third analysis : 



Per cent. 



Water 3.0 



Volatile substances 22.0 



Ash 7.5 



Fixed carbon 67. 5 



Total 100.0 



Fourth analysis : 



"Water and volatile substances 22.0 



Ash 7.5 



Fixed carbon 70. 5 



Total - 100.0 



Fifth analysis : 



Water and volatile substances 23.0 



Ash 7.5 



Carbon - 69.5 



Total - 100. 



* Sixth analysis, (F. P. :) 



Water 2.25 



Volatile substances 20.75 



Ash 6.40 



Fixed carbon - 70.60 



Total 100.00 



Seventh analysis, (F. P. :) 



Water 3.75 



Volatile substances -' 21. 25 



Ash 6.00 



Fixed carbon 68.00 



Total J - 100. 00 



Average of seven analyses : 



Water 3.00 



Volatile substances 20. 85 



Ash 7.23 



Fixed carbon - 69.09 



Total 100- 17 



Of sulphur 0.72 per cent, -was obtained. 



Bituminous coal from Marshall's property near Boulder dtp, Colorado 

 Territory. — This coal is black, (in powder dark brown,) and when ex- 

 posed to the atmosphere friable, as are all of these tertiary coals. Its frac- 

 ture is conchoidal and the luster of the smooth surfaces of fracture 

 resinous. 



Specific gravity 1.412 



Weight in air 595.06 



Weight in water 173.08 



First analysis : 



Per cent. 



Water 16.00 



Volatile substances ^"no 



Fixed carbon 42.00 



Ash 4. PC 



Total -- 100.00 



* The analyses marked P. P. were made by Mr. Franklin Piatt, jr. 



