PRESENT BOUNDARY OF GLACIER RECORDED. 



263 



chosen. Numerous photographs were taken* to show the ice-front in 

 various places, and several records were left from which the position of 

 the present front was determined. These records are described in some 

 detail below. 



The first record is on the northern side of the north arm of Cornell 

 glacier, about a quarter of a mile from the sea. Here a survey was made 

 (August 18, 1896) of the ice-margin, an ice-dammed lake, and some 

 moraine embankments of boulder-clay (plate 27, figure 2), left by the 

 retreating glacier, the present margin of which was also determined (fig- 

 ure 1 of the text). The survey was made from a short baseline at an 

 elevation of 60 to 100 feet above sealevel, in the amphitheater which 

 forms the most marked indentation in this part of the present boundary. 

 Here the steeply rising Avails of the peninsula retreated from the ice for 

 several hundred yards, forming a 

 turf covered amphitheater whose 

 length is about a quarter of a 

 mile. Between the headlands of 

 this indentation a shallow mar- 

 ginal lake is now held by a mo- 

 raine dam. The baseline was 

 marked by cairns at each end, 

 and at the base of each of these 

 a record was placed. The map 

 made from this survey is repro- 

 duced as figure 1. 



Just below this place (toward 

 the sea) the sea end of the glacier 

 was marked (August 19. 1896) by 

 a cairn left on the rock at a dis- 

 tance of about 40 feet from the 

 sea and an elevation of 25 feet 

 above it. From this the distance 

 was measured by stadia readings 

 to the nearest part of the ice- 



, , . . „ , £, Boulder beach ; R, Rock point ; G, Glacier ; S, 



front, aild alSO tO the ends 01 the transit station and cairn; M, Moraine embank- 



three moraines (more fully de- ments. Distance from A to C, 133 ^et ; from C to 



• i i 1 1 N T • • D, 212 feet ; from D to E, no feet. 



scribed below) marking stages in 



the nresent retreat of the ice. The location of this cairn and the posi- 

 tion and distance of ice from it are approximately shown on the accom- 

 panying sketch (figure 2). 



■Northern End of Sea-front of Cornell 

 Glacier. 



* Copies of these photographs will finally be added to the Geological Society of America series 

 and the negatives placed among the collections at Cornell University. 



