192 F*. REPORT OF PROGRESS. E. W. CLAYPOLE. 



Centre township from Miller, and runs immediately south 

 of the Oriskany sandstone till it crosses the Newport- 

 Bloomfield road about a quarter of a mile north of the sum- 

 mit of the ridge. It then continues west-southwest to the 

 Old Juniata furnace works on the old road to Newport. 

 No yield of ore has been obtained from it along the line of 

 outcrop, so far as I am aware, east of this place. But at 

 this point it begins to afford a rich supply, and great quan- 

 tities were taken from it while the furnace was in blast. As 

 will be seen at once by inspecting the map the field over 

 which the ore has been proved is not extensive. It consists 

 only of a long narrow tongue of shale land bounded by two 

 converging ridges of the Oriskany sandstone which meet in 

 the woods about a mile west of the Furnace road. Erosion 

 too has destroyed a portion, the stream coming from Lime- 

 stone ridge having cut its way across the narrow syncline 

 and removed the two Oriskany ridges with the intervening 

 black shale and ore, and other beds over a considerable 

 space. The course of this ore-bed may be traced in the 

 sketch-map, Plate XV, page 174, Fig. 1. 



The second line of outcrop of the Marcellus ore comes in 

 also from Oliver township as a narrow almost closed syn- 

 cline shown on the map. In Oliver township this syncline 

 is more open, in fact double in some jriaces, and has yielded 

 an immense quantity of ore for the supply of the Marshall 

 furnace at Newport. (See Report on Oliver Township.) 

 But in Centre township the greater portion of the syncline 

 has been eroded and washed away leaving only the bottom. 

 Consequently the iron ore so abundant a mile to the north- 

 east is here almost absent. Numerous holes have been dug 

 but little has been found to reward the labor. And the 

 geological indications are that nothing will be found because 

 the ore has been eroded. (See Page Plate XVI, Fig. 4.) 



Following the beds a little farther to the west the Oris- 

 kany sandstone is cut out of the syncline altogether at the 

 school-house, and henceforth the limestone alone remains. 



Tin* third outcrop of the Marcellus hematite comes in 

 from Miller township, passing about 100 feet south of Pine 

 Grove church where attempts have been made to find the 



