3. CENTKE township. F\ 205 



tions of the bed were present — the Paracyclas shale which 

 lies close upon it being reached — but the bed itself seems 

 to have been thin and worthless. The opening is now closed 

 so that nothing can be learned by inspection except from 

 the waste material thrown out. This, however, amply 

 proves that the drift was made in the right place. 



Signs of the same bed occur in the gap south of Bloom - 

 held and there is no doubt that the ore bed skirts the woods 

 on the south side of the ridge. But it is deeply covered 

 with wreckage from the sandstone above, and judging from 

 the evidence in the two places mentioned it is thin and not 

 worth exploring. Yet it is only fair to observe that the 

 same bed has yielded abundance of ore outside the line — 

 as at G. Petermans and P. Cook's in Miller township. 



The same bed must exist around each of the anticlinal 

 ridges described under the Hamilton sandstone, viz : Craw- 

 ley hill and Furnace hills. It must skirt the north and south 

 flanks of Crawley hill and run round the outside of the 

 eroded Perry furnace anticline. In none of these, however, 

 has any attempt been made to work it or even to prove it, 

 except about half a mile north of the furnace where it was 

 found of fair quality. Nor is it at all probable that such 

 attempts if made would yield any other results than an ex- 

 penditure of time and labor and a gain of the knowledge 

 that the ore is of little value. 



The Hamilton upper shale. 



These shales, about 250 feet thick and overlying the Ham- 

 ilton fossil ore, crop out in several places in the township. 

 They are as usual nearly barren of fossils except their upper 

 and lower layers, which yield them in profusion at almost 

 every exposure. Locally these shales are naturally divided 

 into four parts, as shown in the general report on the county : 



Fenestella shale, 10 feet. 



Tropidoleptus shale, 10 " 



Barren green shale, 200± " 



Paracyclas shale, 2 " 



The richest exposure of the fossiliferous beds of the Up- 



