BUKEAU COtnSTT. 179 



Contains a very few thin seams of carbonate of lime, with occasional 

 thin scales of sulphuret of iron. Swells but little in coking. 



Specific gravity 1 . 363 



Loss in coking 43.0 



Total weight of coke 57 . 



ANALYSIS. 



Moisture 7.5 



Volatile matter 35.5 



Carbon in coke 48.9 



.- (white.) 8.1 



100 

 Carbon in the coal ................................................................................ 57.0 



To this I might add that this coal makes a considerable amount of 

 clinker and i.s inclined to become solid enough to clog the grate. As a 

 strain making coal it is hardly considered so good as that furnished by 

 the upper seam, the clinker from which easily crumbles and runs through 

 the grate. It is however a good coal for general purposes. Its accessi- 

 bility and the ease with which it can be worked, make it a valuable 



Going up Coal Valley about half a mile, the outcrop of the upper 

 is reached. It is well upon the hill side; supposed to be" from, 

 forty to forty-five feet above the level of the middle seam. It might be 

 possible that this so-called upper seam is but another outcrop of the coal 

 just referred to, and that the difference in level is owing to a local dis- 

 turbance ; but I believe it to be a different seam, identical with and be- 

 longing to the same horizon with the upper coal at Robinson, Dinks & 

 < '<'<. shaft, near Buda, and Bierinaii's shaft, east of Princeton. Messrs. 

 Worthiugtou & Marshall are working a drift at the present time at this 

 place. The coal is from one and a-half to two feet thick. Black slate 

 and shale are found over the coal ; the usual fire clay exists below it. 

 The clay bluff overlies all to the depth of about forty-five feet. The 

 coal is softer than the other seam ; has a reddish or rusty appearance, 

 and cannot be worked to very great profit. The one foot exposure of 

 coal, near the barn of Mr. Whiting, in Rocky Run, belongs to this seam, 

 and lies at about the same general level. The following section will 

 give a general idea of the Tiskilwa coal seams, and associate exposures, 

 and underlaying deposits. 



Section of Coal Seams at TiikUica. 

 Drift clays .......................................................................... 40 to 75 feet. 



Black shale ............................................................................ 2 to 4 



Coal ........................................................................................ 2 6 in. 



Clays and shales ........................................................................... 40 



Coal ....................................................................................... 5 



Alternations of shales, sandstone, etc., passed through ID the boring .............. 175 to 200 



Coal ........................................................................................ 1 6 in. 



Fire clay and clay shale ........................................................... Thickess unknown . 



