390 THE GLACIAL LAKE AGASSIZ. 



drift are respectively 22 feet and 31 feet deep, wholly in loose and caving 

 sand and gravel. Here and through the west half of section 1 7 the Nor- 

 cross beach is a very finely developed ridge, rising 15 feet above its east 

 base and descending 4 or 5 feet on the west. Tlie elevation of its crest is 

 1,087 to 1,091 feet. In the southeast part of section 7 an aboriginal mound, 

 5 feet high and 60 feet in diameter, is situated on the top of the beach ridge; 

 and two others of similar size were seen within a half mile to the southwest. 



Thence the lake shore turns to a northwestward course for the next 

 5 miles, passing through the northeast corner of Primrose to the Middle 

 Branch of Goose River, which it crosses in the southwest part of section 27, 

 Enger. In the south half of section 2, Primrose, the crest of the beach, 

 there unusuall)^ massive, is 1,094 feet above the sea, with a descent of 10 

 feet in 20 to 30 rods eastward and of 5 feet in a shorter distance to the 

 west. Passing northward through Enger Township, this shore bears a typ- 

 ical beach ridge in sections 22, 15, 9, and 3, with crest at 1,080 to 1,085 feet. 



Across the large delta of sand and silt which extends from McCanna 

 and Larimore southward beyond Hatton, the Norcross shore is indistinct 

 in portions of its course, but elsewhere has a well-defined beach ridge. 

 Through sections 8 and 5, Garfield, close northeast of Hatton, the crest of 

 the beach is 1,078 feet above the sea, with descent of 6 or 7 feet in 15 rods 

 east and 2 to 3 feet in 10 rods west. In the west part of section 15, Wash- 

 ington, the beach has an elevation 1,083 feet, from which its eastern slope 

 falls 5 feet in 20 rods, and its western slope 3 feet to a slough 10 to 30 rods 

 wide, which is mown for hay. The material of the beach ridge is fine sand. 

 Three to 4 miles farther north, in sections 33 and 29, Pleasant View, the 

 irregular deposits of the Norcross beach are about 1,085 feet above the sea. 

 In the northwest corner of this township, passing through sections 7 and 6, 

 this shore has a finely developed beach ridge of sand and gravel, with crest 

 at 1,090 to 1,095 feet above the sea. 



On the Devils Lake and Great Falls line of the Great Northern Rail- 

 way two Norcross beaches are crossed, about 3 and 3^ miles east of 

 Larimore, with their crests respectively at 1,092 and 1,080 feet. Through 

 the next 4 miles northward these beach ridges appear to have lain on 

 opposite sides of the Turtle River and of its North Branch, causing these 



