1897.] DRAKE — THE GEOLOGY OF INDIAN TERRITORY. 409 



FEET. INCHES. 



Coal 6 



Carbonaceous shale i 6 



Coal 2 



Carbonaceous shale 2 



Coal 4 



Carbonaceous shale , i 6 



Coal ,ik 



Carbonaceous shale ". i 6 



Shale 15 



Sandstone 25 



Shale 12 



Sandstone 5 



Shale 2 



Coal , I 



Carbonaceous shale 11 



Coal I J 



Carbonaceous shale 6 



Coal 2 



Shale 3 



Coal I 



Shale 2 



Coal I 



Shale 4 



Coal 2 



Three miles east of this section the coal is two feet six inches 

 thick. One and a half miles southwest of Heavener it is twenty- 

 eight inches thick. Three miles northwest of Heavener the coal 

 has been mined considerably and is said to be about four feet thick. 



This coal has been mined quite extensively where it is touched 

 and crossed by the St. Louis and San Francisco Railway. At the 

 most easterly point touched by the railway, a place once called 

 Pocohontas, the coal lies in two beds separated by about fifty feet 

 of shale ; the upper coal bed is thirty-seven inches thick and the 

 lower one forty-four inches, and the bed dips about 45°. 



At Wilburton preparations for extensive coal mining were being 

 made in 1896. The coal occurs in two beds separated by about fifty 

 feet of shale. The upper bed is about four feet thick ; the lower 

 one was not accessible in 1896, but the superintendent of the mine 



