GEOLOGICAL SURVEY OF THE TERRITORIES. 115 



For purposes of comparison I insert here analyses of coal from Utah : 



Analysis of coal from Evanston, Utah, (mine of the Rocky Mountain Coal and Iron Com- 



pany.) 



Per cent. 



Water 7. 00 



Volatile matters 42. 00 



Carbon 45. 00 



Ash, (reddish) 0.00 



100. 00 



Average of, three analyses of coal from Evanston, Utah, hy Persifor Eraser, jr., and F. 

 Plait, esq., ( United States Geological Survey of Wyoming, 1870, "page 184.) 



Per cent. 



Water 5.83 



Volatile substances 37. 40 



Ash 7.46 



Fixed carbon 49. 50 



100. 19 



The following is an analysis of coal from the mine of Buel & Bate- 

 man, at Coalville, Utah Territory. This was formerly called Sprigg's 

 mine : 



Analysis. 



Per cent. 



Water 6.50 



Volatile substances 41. 70 



Carbon 44. SO 



Ash , 7.00 



100. 00 



Analysis of specimen, from the same mine, iy Persifor Eraser, jr., (United States Geological 



Survey of Wyoming, page 183.) 



Per cent. 



Water and volatile substances _ 50. 80 



Ash .3.60 



Fixed carbon 45. 60 



100. 00 



About a mile or two south of Spring Canon I visited a second canon 

 which another branch of the Gallatin has cut in the range. The gen- 

 eral direction of the stream in this caiiou is north 75° east. The expos- 

 ure of the Upper Cretaceous beds is perhaps better here than in Spring 

 Caiion. The first exposure is a bed of white crystalline limestone, dip- 

 ping south 50° west: angle, 50°. This limestone is followed by red and 

 yellow sandstones, which are themselves succeeded by a bed of brown 

 limestone, weathering bright yellow. These occupy between one and 

 two hundred feet. Then follow the soft, gray sandstones that I noticed 

 near Spring Caiion and Bridger Peak. They continue foe about half a 

 mile, when we come to Jurassic rocks, the first bed of which we recog- 

 nize as one of the Spring Canon layers. It dips south 40° west ; angle, 

 85°. It is followed by the same beds we saw in Spring Caiiou. They 

 are in fact onlj^ a continuation of the same. The Carboniferous lime- 



