100 J. J. STEVENSON CAEBONIFEKOUS O? APPALACHIAN BASIN 



county line 160 feet; in this county it increases to 180. Westwardly, 

 beginning in Donegal township of Washington, it is 90, near Wheeling, 

 96 to 100, at Bellair, 4 miles south, in Belmont, 117, while in western 

 Belmont it is 100 feet, which seems to be maintained on most of the 

 western outcrop. The Bellair interval seems to be approximately that 

 for a considerable distance along the Ohio river, while in the northern 

 counties of West Virginia the interval is from 160 to 170 feet. It is 

 somewhat less by the time one reaches the central part of the state. 



The Washington coal bed Maryland: Washington, Pennsylvania: 



J. J. Stevenson and Waynesburg, Washington. Ohio : XIII, 



I. C. White, 1876. Hobson, Washington. West Virginia: 



Washington. 



This coal bed, 50 to 180 feet above the Waynesburg coal bed, has been 

 found almost invariably wherever its horizon is reached in Maryland, 

 Pennsylvania, Ohio, and West Virginia. It was termed Brownsville by 

 Doctor White, but to avoid confusion with the Pittsburg, already known 

 as the Brownsville in much of western Pennsylvania, the name was 

 changed with his consent to Washington. In all probability it is the 

 thick coal bed near the top of Eound Knob in Broad Top and it is clearly 

 recognized in the Maryland area. Its distribution in West Virginia 

 toward the eastern border is a little uncertain, as there seems to be no 

 doubt that it and the Uniontown have been mistaken each for the other 

 in the earlier observations; but Doctor White has made clear that the 

 bed is present at the southeast almost to the border of Clay county, while 

 borings show it across the state to the Ohio, where from Wheeling to 

 Pomeroy it is rarely missing; and in Ohio wherever the record is high 

 enough to reach this bed it is shown in Belmont, Monroe, Muskingum, 

 Morgan, Washington, and Meigs, all of the counties in which its horizon 

 is reached. 



The bed is multiple in by far the greater part of the area ; even at the 

 extreme east, in Maryland, it is triple, and of its 3 feet 6 inches 1 foot 

 is in the clay partings. East from the Monongahela river, in Pennsyl- 

 vania, it is rarely more than 4 or 5 feet, but one opening in Westmore- 

 land county shows 9 feet 3 inches in five benches, of which the lowest 

 is 4 feet 2 inches, while another, 3 or 4 miles away, has the bed in eight 

 benches and 8 feet 10 inches thick. It is thin in Allegheny county and 

 very irregular in northwestern Washington, where it is from 2 to 5 feet; 

 but at less than 5 miles south it is a great bed, showing 5 feet of coal at 

 one opening, on which rests a varying alternation of coal and clay 2 to 

 3 feet thick; still farther south one finds 1 foot 3 inches of coal under- 



