274 F\ REPORT OF PROGRESS. E. W. CLATPOLE. 



It is surrounded on three sides by the Juniata river which 

 cuts across these beds three* times in six miles between 

 Baileysburg and Newport. The exposure along the rail- 

 way is so weathered and overgrown that little work in 

 palaeontology can be done there. 



The lower and softer beds, representing the Portage and 

 Genessee, range along the north side of the upper road to 

 Baileysburg and are marked by low ground. The Upper 

 or Middle ridge group (for the most part) forms the high 

 bluffs along the river side. A good exposure occurs along 

 the road just mentioned which crosses the beds nearly at 

 right angles. 



The northern part of this group in the peninsula lies low, 

 having been cut down by the river, and a broad expanse of 

 flat land occupies the whole bend. The dip of the beds is 

 almost every where steep to the N. N. W., but at some 

 places, for instance about a mile south of Newport, are sev- 

 eral small anticlines or folds. 



A second line of outcrop of the Portage-Chemung group 

 in Miller township lies to the south of Mahanoy ridge on 

 the south slope of the Hamilton upper shales. The lower 

 softer beds here also form a valley which is drained by the 

 north branch of Losh's run. The harder layers of the Up- 

 per Chemung group form a rough, wooded range of low 

 hills skirting the north slope of Dick's hill and abutting on 

 the limestone and the Hamilton sandstone brought up by 

 the fault. This outcrop shows a S. S. E. dip almost every- 

 where. 



The tract of Portage-Chemung here described narrows 

 down eastward owing to the protrusion southward of the 

 Upper Hamilton shales brought up by the small fault in 

 Mahanoy ridge near the Juniata, as shown on the map. It 

 is finally thrown out altogether before reaching the river 

 by the meeting of this outcrop of Hamilton upper shale 

 with that brought up by the Perry county fault along the 

 line of Dick's hill. 



The Catskill group, No. IX. 

 A small area <>f these rocks exists at the northern point 



