68 PROCEEDINGS OF THE PEIXCETON MEETING 



process of solution is complete destruction. The penultimate condition is that 

 of a thin chip of limestone, in which the original circular form of the equa- 

 torial plane is not always evident. This may be due altogether to the process 

 of solution, or it may also be caused by fracturing of the rock fragment, as it 

 becomes very much thinned by surface etching. 



The process is, of course, limited to the surficial part of the gravel deposits. 

 Gravels of this kind can have but a very limited occurrence in older forma- 

 tions, since they can be formed only in deposits in the process of destruction. 



Presented by title in the absence of the author. 



HIGH-LEVEL LOOP CHANNEL 

 BY T. C. HOPKINS 



(Abstract) 



The channel has an east-west direction across the north-south ridge between 

 Butternut Valley on the east and Onondaga Valley on the west. The floor of 

 the valley is more than 50 feet above the Butternut Valley and more than 200 

 feet above the Onondaga Valley. The channel is 150 to 250 feet deep in the 

 ridge. Near the middle of this channel is a loop on the south side nearly two 

 miles long around a large hill. The east end of the loop meets the direct 

 channel at grade, but at the west end of the loop the bottom of the loop part 

 of the channel varies from 20 to 05 feet above the nearly level floor of the 

 direct channel. 



Presented by title in the absence of the author. 



DIVERGENT ICE-FLO^\i ON THE PLATEAU NORTHEAST OF THE CATSKILL 

 MOUNTAINS AS REVEALED BY ICE-MOLDED TOPOGRAPHY 



BY JOHX L. RICH '*' 



The contour maps of the northeastern angle of the plateau of central New 

 York, lying between the Hudson on the east, the Mohawk on the north, and 

 the higher Catskills on the south and southwest, bring out a striking topog- 

 raphy characterized by smoothly flowing and spreading lines diverging from a 

 point just off the edge of the plateau and about 6 miles southwest of Sche- 

 nectady. 



A reconnaissance examination of the region shows that two features, both 

 the result of glacial action, are responsible for this topography. Of these a 

 finely developed and extensive group of drumlins is the most important. Of 

 less importance than the drumlins, but still contributing noticeably to the 

 flowing outlines, bedrock fluted by ice erosion constitutes the second featui'e. 

 From the point of divergence the drumlins extend in spreading lines westward 

 at least to Schoharie Creek and. if one may judge from the contour maps, 

 some 15 or 20 miles farther across the Fonda Quadrangle ; south westward 

 about 10 miles to Fox Creek, and southward at least to the base of the Cats- 

 kills near Cairo, a distance of about 35 miles (figure 1). 



20 Manusci-ipt received by the Secretary January 2, 1914. 



