Lyman.] 



302 



[Nov. 2, 



sides of the branch and about half a mile from its mouth. At the upper, 

 southern, one there was the following section from above downward : 



Gray shale, exposed about 



Black slate " 



Gray shales " 



Coal, bituminous, and clay and slate in several 



layers, mostly coal " 



Gray shales. 



At the lower, northern, opening of the two, there was the following 

 section from above downward : 



Brownish-gray sand rock about 1 6 



BroM^ and gray shales '* 5 



Black slate " 1 5 



Gray shales 1 



Coal, bituminous 3 



Clay 2 



Coal, bituminous 2 



9 



6 



Tlie same bed seems also to have been opened on the Stewart Branch of 

 the Left Fork, some 500 yards above the mouth of the branch, by a couple 

 of old ruined drifts tliat expose a few inches only of the top of the coal, 

 witli two or three feet of shales over it. 



Jeurold's Coal. — Jerrold's Coal of Lens Creek seems not to exist at 

 Peytona, but to be represented perhaps by some three inches of black 

 slate at the bottom of about twenty feet of apparently iron-bearing brown 

 shales just like those that overlie the bed on Lens Ci'eek. The black slate 

 is exposed on the railroad about sixteen feet above the top of the lower 

 shoot. 



The bituminous coal bed worked by Jerrold on the bank of the Left Fork 

 of Lens Creek, just below the mouth of Ketcham Branch, has the following 

 section there, from above downward : 



Loose blocks of sandrock. 



Roof slate, exposed 



Coal, bituminous, comparatively soft. . . 



Coal, bituminous, much of it hard 



"splint," but generally less hard than | 



Wood's Upper Coal 2 8^ J 



3i 



4 3^ 

 It would seem probable on the whole that it is the same bed that was 

 worked at Mitchel's Coal drifts on the left fork of Lens Creek about 200 

 yards above the mouth of Ketcham's Brancli ; though it is possible that 



