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



stone. Eere the bed rock maybe seen in nearly vertical 

 beds. It does not exceed, so far as can be determined, 12- 

 20 feet in thickness, and the fossils are not distributed in- 

 discriminately through it, but occur in certain irregular 

 layers or pockets so that one side of a slab is often a clean 

 smooth sandstone, and the other a conglomerate of shell- 

 casts and flat quartz pebbles. 



The sandstone may be traced as a low stony ridge with- 

 out any conspicuous outcrops, nearly parallel with the road 

 across Dark Hollow, where its presence is indicated about 

 hall' a mile from the head of the "Loop" on Sherman's 

 creek, by a few loose stones carrying the characteristic fos- 

 sils. It passes on without any very marked display until 

 it crosses the line into Carroll township. 



The section through the Lower Catskill rocks at Linton's 

 hill, which properly belongs to this township, will be found 

 in the report on Penn township. It is placed there in order 

 that it may be in juxtaposition with the Kingsmill section, 

 which is its upward continuation. 



The Catskill group, JVo. IX. 



The Catskill rocks compose the whole of the extreme 

 southern portion of Wheatfield township. The eastern 

 part, consists of the Chemung-Catskill beds, ending with 

 the Kingsmill sandstone. These have been already noticed. 

 In the west, however, where the township extends more to 

 the south, it, includes almost the whole thickness of the 

 Catskill rocks. The hard lower beds may be seem in the 

 neighborhood of Dellville. They form a barrier to the creek 

 in all its northern excursions, reflecting it as from a revet- 

 ment wall. Oneof these beds, the Dellville green sandstone, 

 occurs near Dellville mill. It is a hard massive rock, or 

 rather double layer of rock with a thin parting in the mid- 

 dle composed mostly of vegetable remains. This bed may 

 be traced for a considerable distance over the country, and 

 serves as a convenient horizon of reference among the mo- 

 notonous red -shale and sandstone. It is seen at the foot- 

 bridge a mile west of Dellville, at Dellville, and again on 

 the Little Juniata, near Kingsmill, where its included plant- 



