No. 7.] DAWSON — COAL SEAMS. 427 



again appears, in the west bank of the rivor. tlie Main Seam 



shows the following section : — 



ft. in. 



Coal 1 C 



Shale :-; 



Coal 4 6 



Shale 1 6 



Coal 2 9 



Total coal 8 9 



The lowest division of the seam at this place is apparently not 

 represented in the sections previously described. The coal in it 

 is somewhat laminated, but seems to be of good quality. The 

 dip is here about S. 70"^ W. (mag.) at at anglo of 5*^. 



About three miles further north, extensive exposures of the 

 coal are again found in the scarped bank or cliff facing the 

 river, at a heio-ht of about 100 feet above the water level. The 

 dip is light and undulating, but on the whole westward, or away 

 from the river. The Main Seam is here composed as follows: — 



ft. in. 



Coal 2 6 



Carbonaceous shale 7 



Coal 2 2 



Carbonaceous shale 1 



Coal 1 3 



Total coal 5 11 



The coal here appears to be of good quality throughout. 

 North of this point on the river the Main Seam is not again 

 found well exposed, though in several places the associated rocks 

 are shown in such a way as to indicate that it outcrops below the 

 drift a short distance east of the river valley. 



At the point at which the base of the Pierre should cross the 

 Little Bow River, a seam of coal a few inches thick was ob- 

 served, but the exposures did not bring the main seam into view. 



The coal-bearing horizon appears again on the Bow River at 

 Grassy Island, about thirty-three miles in a direct line below the 

 Blackfoot Crossing, at lat. 50^ 25' 15". In their general appear- 

 ance, arrangement and thickness, the seams here exposed closely 

 correspond with those on the Belly River. The subjoined sec- 

 tions exhibits the relations of the coal at this place : — 



