COAL MEASURES. 5 



Ft. 



LimostoneC?; 15 



Black shale 10 



Coal No. 3(?) 1 



Fireclay 3 



Gray shale 20 



Limestone(?) 15 



Black shale 11 



Coal No. 2 5 



Fire clay 2 



Sandy shale 14 



Black shale 10 



LimestoneC?) 20 



Sandstone 63 



Blue shale 16 



Coal No. 1 4 



Fire clay 1 



Shalo and sandstone 67 



655 



Having no other section through the lower portion of the Coal 

 Measures in this part of the State for comparison, I am not pre- 

 pared to say how far the above report can be depended on as cor- 

 rect. The beds reported as limestones 40, 15 and 20 feet in thick- 

 ness, were probably in part at least hard sandstones, as no such 

 heavy beds of calcareous rocks are anywhere known in the State 

 below the horizon of the Riverton coal. At Olney, in the south part 

 of the State, a boring for artesian water was made to the depth of 

 two thousand feet, passing through only one coal seam, which was 

 found at a depth of eleven hundred and sixty feet from the surface. 

 A section of this shaft will be given further on in this report. From 

 this boring it would seem that all the coal seams save one have 

 thinned out in that portion of the State. 



At Canton, in Fulton county, a boring for artesian water was 

 recently made by Messrs. Atwater & Co., commencing above the 

 horizon of coal No. 5 and extending through the lower Carbonifer- 

 ous limestones and into the Silurian rocks below. The following 

 section will exhibit the low r er Coal Measure strata passed through 

 in this boring: 



Ft. In. 



Surface deposits, soil, clay, etc 40 



Shalo 40 



Coal No. 5 4 6 



Shale 15 



Limestone(?) 20 



Shale 61 



Slate (horizon of coal No. 3) 15 



Shale 30 



Coal No. 2 1 6 



Fireclay 6 



