218 F a . REPORT OF PROGRESS. E. W. CLAYPOLE. 



Robert Cochran, about a mile northeast of Millerstown, and 

 those of Mr. S. Hoffman, about two miles further to the north- 

 east, where the ore beds flatten down and dip more to the 

 east before disappearing under the overlying Lower Helder- 

 berg limestone which here laps round the end of the hill. 



The fossil ore beds return westward to the north of 

 Slaughterbeck hill, but I have not been able to learn that 

 any ore has been taken out there or any attempt made to 

 prove the beds. They are reported to be of inferior quality. 



The Lower Helderberg {Lewistown) limestone. No. VI. 



Few exposures of this limestone occur along its southern 

 outcrop in the western part of the township. It occupies 

 for the most part the low land along the course of Cocala- 

 mus creek. It is, however, well exposed at the great bend 

 where the stream strikes against Wild Cat ridge and is di- 

 verted to the west. Here it consists of solid heavy bitu- 

 minous limestone, and some of its fossils, for example Sp. 

 modesta and Rh. formosa, may be obtained. Its whole 

 thickness near Millerstown is about 300 feet, but its various 

 divisions can with difficulty be made out. At the bend in 

 the creek before alluded to the chert beds are well shown. 

 These beds seldom appear, being almost always disinte- 

 grated by the action of the weather. 



The Orislcany sandstone No. VII. 



Near Millerstown the Oriskany sandstone is exceedingly 

 thin and makes none of those conspicuous ranges of pulpit 

 rocks which mark its outcrop in the middle of the county. 

 Its two lines of outcrop are drawn where the sandstone should 

 be, rather than where it can be seen, for it rarely happens 

 that even a fragment of it can be found except in the west- 

 ern part of the township, where I have picked up a few 

 small pieces among the wreckage of the Hint ridges which 

 is there very abundant. So far as I have been able to see 

 the Oriskany seems to thin out in the east of the township. 



The Marcellus group. 

 These rocks, so far as I have observed, have no good ex- 





