NEW YORK ACADEMY OF SCIENCES 609 



Professor Stevenson described a small area in northwestern 

 Vermont. His conclusions were that, after withdrawal of the 

 ice, clay was deposited along the streams to an altitude of 

 about 750 feet above tide; that upon this sand, gravel, and 

 boulders accumulated to a thickness of about 450 feet. He 

 traced the steps in re-erosion of the channel ways as shown by 

 the successive terraces. The area in question is the north- 

 ward extension of Professor C. H. Hitchcock's third basin of 

 Winoiski River as defined in the Geology of Vermont. 



In the third paper of the evening Dr. Julien said the evidences 

 of plucking action of the continental glacier upon the crystalline 

 schists of the island consist partly of jagged broken surfaces 

 beneath the till, with angular transported blocks in the moraine 

 to the southwest; and partly of rounded but roughened hum- 

 mocks, pitted apparently by a modification of semilunar cavi- 

 ties, such as have been discovered in perfect condition on scored 

 surfaces of our limestone. 



Channels and pipe-like troughs were also described and attrib- 

 uted to the action of subglacial running waters, probably once 

 connected with waterfalls through crevasses in the great glacier. 

 The allied feature of pot-holes, found just beyond the limits 

 of the island, was then discussed, and another hypothesis 

 advanced to account for their formation. 



A sudden southward change in the direction of the glacial 

 furrows over the island, their asymmetric form, and distinct 

 southward curvature were described as evidences of a decided 

 slope of the general surface toward the south-southwest, at 

 the time of its subsidence during the glacial movement. A 

 topographical modification was also referred to, through the 

 undercutting of joint planes facing the northeast. 



Dr. Kunz stated that during the spring of 1905 there had 

 been shown to him some precious garnet, pyrope, in rounded 

 irregular transparent grains, measuring from two to five milli- 

 meters in diameter. That these had been found in the tunnel 

 extension of the New York subway, about 1200 feet south of 

 Pier No. 1 , North River, under New York Harbor, at a depth 

 of no feet below the bed of the bay. That upon visiting the 

 locality he found that the entire walls of the tunnel had been 



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