EASTERN M'CAULEYVILLE SHOEES. 433 



the next townshij) on the north. From the ford of the Snake River in the 

 northwest corner of Vikmg the trail deviates three-fourths of a mile to 

 the west, again taking its way along the crest of the McCauleyville ridge, 

 which is finely developed through the next 18 miles, to the north part of 

 Nelson Park Township. The farther course of this beach, however, was 

 not followed, as it extends into the borders of a more wooded or bushy and 

 swampy country. 



The beacli is intersected by the Middle and Tamarack rivers, respec- 

 tively, in the southern and northern edges of township 157, range 46, 

 Wright. Through the south half of Nelson Park, lying next north, the 

 conspicuous beach ridge, rising 5 to 10 or 15 feet above the originally 

 unchanneled surface on the east, was a sufficient barrier to turn the Tama- 

 rack River from its normal westward course to one a little east of south 

 for 3 miles before it cut through the ridge. At the center of the township 

 of Nelson Park, where this river first comes to the beacli from the east, the 

 Pembina trail departs from it to the northwest. In its extent of 25 miles 

 thence to Hallock, descending about 200 feet, this trail crosses several shore- 

 lines of Lake Agassiz which elsewhere in certain portions of their course 

 are very clearly defined; but no distinct beach ridge or eroded escarpment 

 was seen on the trail or on either side, although the surface is mostly a 

 gentle and regular slope of till, affording apparently very favorable condi- 

 tions for the formation of shore marks. 



Beyond Nelson Park the general com'se of the McCauleyville shore 

 across Kittson County is to the north and north-northwest. It appears to 

 be represented on the north line of Minnesota, according to the profile of 

 the British Boundary Commission (p. 401), by a massive beach ridge with 

 crest 1,016 feet above the sea and 20 feet above the land on each side, 

 lying 20 miles east of the Red River. Within a short distance farther 

 north, in Manitoba, this shore probably turns east-southeastward for a 

 dozen miles or more, to cross the Roseau River near Pointe d'Orme (Elm 

 Point), on the international boundary. Thence it passes northward and 

 northeastward through the wooded region of southeastern Manitoba to the 

 vicinity of Rennie station, on the Canadian Pacific Railway, and to the 

 Winnipeg River, which it crosses not far above the mouth of the English 

 River. 



MON XXV — —28 



