ISLANDS NORTHEAST OF BAENESVILLE. 289 



Near the middle ot" this section 17 the beach deposit of gravel and 

 sand ceases at the west side ot" the northern island, which was situated in 

 the east half of this section and extended also eastward in a long, low pro- 

 jection nearly across the south side of section 16, and northward half way 

 across section 8. Highest part of this island, in or near the northeast 

 quarter of the northwest quarter of section 17, about 1,125 feet. The old 

 sliore of the north half of this island has no beach ridge nor other deposits 

 of gravel and san<l, but is plentifully strewn with large bowlders up to 5 

 and 10 feet in diameter, and many of these project 2 to 5 feet above the 

 general surface. The lake waves eroded here, and deposited the sand and 

 gravel gathered from this till as a beach a little farther south. 



North and northeast fr<iiu this northern island a lower expanse, nearly 

 level and in some portions marshy, resembling- the broad, flat valley of the 

 Red River, extends 1^ miles to the east shore of Lake Agassiz, its height 

 being 1,075 to 1,090 feet, or 10 to 25 feet below the surface of the ancient 

 lake. The distance between these islands was 2 miles, and the distance 

 from the summit of the first to that of the second, nearly due north, 4 miles. 

 Each of them rose about 25 feet above Lake Agassiz. The strait between 

 them and the mainland eastward was 10 to 20 feet deep and from 1 to 1^ 

 miles wide, excepting a narrow place near the southeast corner of section- 

 16. East of the northern island the main shore of the lake was indented by 

 a bay a third to a half of a mile wide and about 10 feet deep, stretching 2^ 

 miles southeastward from the lakelet at the northwest corner of section 10 

 to the west part of section 23, Skree. The shore of the lake east of its 

 islands along this bay and northwesterly to the north line of this township 

 lacks the beach deposits which elsewhere distinguish it. 



In its continuation northwestward the shore-line of the old lake runs 

 diagonally across section 32, Hawley, where it again presents the anoma- 

 lous character of a very springy and marshy belt, 20 to 40 rods wide, rough 

 with hummocks and in many places so deeply miry that it is dangerous for 

 teams. This boggy tract has a gentle descent westward, its lower portion 

 being about 1,085 feet, and its upper border, very nearly level across this 

 entire section, being 1,098 to 1,100 feet, which was almost exactly the height 

 of Lake Agassiz, as shown by its distinct beach of gravel and sand at the 

 MON XXV 19 



