340 F\ REPORT OF PROGRESS. E. W. CLAYPOLE. 



ring through the Oriskany ridge, being brought up by the 

 Perry county fault. The portion of the limestone and shale 

 here exposed is about 40 feet thick and yields the fossils as 

 mentioned above. 



Two other smaller exposures of these beds may be seen 

 near the residence of the Messrs. Rice. One of these is op- 

 Xwsite the house. The ledges of limestone may be here seen 

 in the road. The other is about a mile to the northward 

 where the Oriskany ridge returns and crosses the road to 

 Greenpark. Nearly 75 feet are here exposed, but the limits 

 are concealed. 



The Marcellus ore, ( VIII.) 



The zigzag folds of the Oriskany sandstone lead us to an- 

 ticipate a long and intricate outcrop of this valuable ore bed 

 in Spring township. This is the case. It would be tedious 

 to enumerate here the various lines along which it may be 

 looked for. Any one may trace them for himself upon the 

 map by recollecting that the ore bed lies about 50 feet above 

 the Oriskany sandstone (i. e.) on the opposite side to the 

 limestone. There can be little doubt that Sr>ring township 

 contains an almost inexhaustible supply of hematite from 

 this l)ed alone. Nor is this only theory, for the bed has 

 been opened in a number of places sufficient to show that 

 its quality and thickness are not inferier to what they are 

 at other places in the county. 



To mention all the openings that have been made would 

 be almost impossible. A few will suffice. 



At the angle where the Oriskany crops out from below 

 tli<' Devonian strata near Oakgrove, at the top of the knoll, 

 great quantities of ore were taken out while the furnace was 

 in blast. Much of the top of the hill is now honeycombed, 

 :in<l from time to time falls into the old working. 



Again at the high point where the Oriskany inns our be- 

 hind Adam's Glen school-house, two miles east of Landis- 

 burg, much ore has been mined. Fewpeojole now living in 

 the neighborhood recollect the time, as the bank has been 

 closed for nearly fifty years. 



