THE IIILLSBORO BEACH. 453 



of this shore lias the same heiglit, or 930 to 935 feet, in sections 25, 24, and 

 13, Rushford. Tlienee tln-ough an extent of abont 50 miles to the inter- 

 national boundary, although the course of the Hillsboro shore is mapped 

 approximately on PI. XXX, its height is known by leveling in only one 

 place, near the center of section 15, Walhalla, about 2.^ miles northeast of 

 Walhalla village, where tlie top of the beach is 940 feet above the sea, 

 rising 15 feet above its base 20 rods distant to the east and bordered by a 

 depression of 2 to 5 feet on the west. 



The Hillsboro beach enters Manitoba near the middle of the south side 

 of range 4 and passes north-northwestward. It is not conspicuous on the 

 international boundary, but near the west line of section 21, township 1, 

 range 4, about a mile east of Blumenfeld, it is a noticeable ridge, with a 

 descent of 3 to 5 feet on the east, its crest being about 940 feet above the 

 sea. Its sand has there been excavated for use in plastering. Northward 

 it passes about a half mile east of Oesterwick, 1 h miles east of Morden, and 

 nearly 4 miles east of Miami, where Henry York's house is built on its 

 crest, at an elevation of ;d)out 950 feet. Thence its slopes descend 15 feet 

 in a short distance to the east and 5 feet or more to tlie west, the lieach 

 being much larger than along most of its course. Mr. York's cellar and 

 well are in sand and fine gravel, but the lower land adjoining oa each side 

 is till. Twelve miles farther north this beach passes near Mr. Field's liouse, 

 in the southeast quarter of section 4, township 7, range ii, about three- 

 fourths of a mile west of Almasippi post-office. The road from Carman to 

 Treherne there ascends a few feet, and in its next third of a mile northwest- 

 ward crosses a tract of sand with hollows 3 to 5 feet Ijelow its highest 

 portions, showing that it was formerly wind-blown. This beach deposit is 

 derived from the erosion of the eastern margin of the Assiuiboine delta, 

 within a few miles to the north. On the road from Arden to Gladstone 

 this beach was not noticed, but it seems to be traceable on the township 

 plats northward nearly througli the middle of townships 15, 16, and 17, 

 and through the west part of townships 18, 19, and 20, in range 12. 



On the Swan River and its tributaries, north of Duck ]\Iountain, the 

 Hillsboro beach, according to my correlation of Mr. Tyrrell's observations, 

 has been traced fraymentarih' along- a distance of 20 miles from east to 



