114 GEOLOGICAL SURVEY OF THE TERRITORIES. 



Stones, which are followed by coarse, gray sandstones. When the bed was 

 S opened there were several sea.ns of clay in it, but as the shaft pene- 

 trated^ deeper they gradually thinned out, and at V^^^^^^^ ^^ 



^'S- ^^- having a thickness of about 



twelve inches. The coal is a 

 lignite, and is well adapted 

 for blacksmiths' purposes. 

 It is used, I believe, by black- 

 smiths of Bozeman, who like 

 it very much. Some of the 

 coal was taken to Helena, 

 and is said to have yielded 

 five cubic feet of gas to the 

 pound. As the shaft goes 

 deeper the quality of the coal 

 seems to improve. Up to 

 the present time there has 

 been but little demand for 

 coal. One reason of this, 

 perhaps, is the abundance of 

 timber in the mountains 



a a, Santlstono; vv, Coal; d, Seam of^clay 

 iuto coal. 



C, Opening 



near Bozeman, and another reason, perhaps is t^^f ^.^^^^^^^^^^^f^'^ 

 have been fevv facilities for transportation, tlie road through Sp ing 

 Oaiion having only lately been completed. There is l^^y^^t^ doub^ 

 however, that ultimately this coal will be extensively used When the 

 Northern Pacific llailroad is built through this region the utility of the 

 coal-beds near Fort Ellis will become more and more ^PPJ^^^ 



I have made tlie following analysis ot the coal. No. 1 is a 1 oor spec 

 men, No. L> medium, and No. 3 the best. The coal is black, (biown in 

 powder,) has a high luster, irregular fracture, specific gravity. iUe 

 coke is moderately good, and has a high luster: 



Aiialynis Xo. 1. 



Per cent. 

 6.00 



Water 3'2. 90 



Volatile matters ' 44. lO 



Coke 17' 00 



Abli 



100. 00 



Anahjsis No. 2. 



Per cent. 



3.00 



Water 41. HO 



Volatile matters 43. .")0 



Coke '. 12. 00 



Ash 



100. 00 



An nil/sis No. 3. 



Water. 



Per cent. 

 7.00 

 34. 50 



Volatile matters .'.'.... 50. 50 



Coke 



Ash, (wbite). 



8.00 

 100. 00 



