184 GEOLOGICAL SURVEY OF THE TERRITORIES. 



Per cent. 



Ash 7.70 



Fixed carbon 49.80 



100. 00 



Third analysis, F. P. : 



Water 6.00 



Volatile substances 37.00 



Ash - 7.00 



Carbon 49.40 



100. 00 



Average of three analyses : 



Water . 5.83 



Volatile substances 37.40 



Ash 7.46 



Fixed carbon 49.50 



100. 19 



Coal from Mlco. — A lignite of light-brown color and low specific 

 gravity, possessing the feel and much of the appearance of wood ; is 

 tough and tenacious when pounded or rubbed in a mortar. Tt is filled 

 with minute specks, of metallic color and luster. 



As the coal had been kept a long time in a warm room, and had there- 

 fore altered in respect to its per centage of water, this and the volatile 

 substances were determined together.. A fresh specimen would proba- 

 bly contain from 7 to 10 per cent, water. 



Per cent. 



Water and volatile substances 63.50 



Carbon 22.00 



Ash 14.50 



Sulphur 0.82 



100. 82 



Ash is of a pure gray color, a fine dust-like powder, containing but a 

 small percentage of soluble salts. 



Iowa coals. — From specimens of coal sent by Mr. Miller, of the Omaha 

 Herald, from Des Moines and Ottumwa, Iowa, the following analyses 

 were made, and may be interesting to compare with those of the Eocky 

 Mountain coals : 



Per cent. 

 No. 1, (Ottumwa,) specific gravity, 1.327 : 



Water 12.00 



Volatile substances 32.00 



Ash 12.00 



Fixed carbon --- 44.00 



Total 100-00 



No. 2, (Des Moines :) 



Water 7.0 



Volatile substances 47.6 



Fixed carbon - 41.4 



Ash 40.0 



Total 100.0 



Sulphur existed in both the specimens to the extent of, perhaps, 1 to 

 2 per cent., but was not quantitively determined. 



