462 THE GLACIAL LAKE AGASSIZ. 



runs nortli-nvorthwestward through the middle of section 9, a half mile east 

 of Grilby station, on the Duluth and Manitoba Railroad. The lower Ojata 

 shore lies about a mile farther east, but was not examined. The upper 

 shore extends from section 4, Gilby, into the southwest quarter of section 

 33, Milan, being there an escarpment 5 feet high, eroded on an area of fine 

 silt. Its base and crest are approximately 870 and 875 feet above the sea. 

 This shore passes about a mile west of Johnstown, and the lower shore lies 

 close east of that railroad station. 



A conspicuous beach ridge of gravel and sand, running nearly along 

 the boundary between till on the west and silt on all the country eastward, 

 extends from the west half of section 36, in an almost straight course, a few 

 degrees west of north, 5 miles to the northwest corner of section 2, Ops, 

 having an elevation at its crest of 875 to 880 feet, with descent of 5 to 10 

 feet east and 2 to 5 feet west. A mile farther east a smaller ridge, about 

 10 feet lower, marks the second Ojata shore. Through the remaining 50 

 miles of its course northward to the international boundary the upper 

 shore-line is mapped approximately on PI. XXX, conforming with the east- 

 ward descent of the land surface. It will probably be found easily trace- 

 able if followed by leveling. 



Along the course of the Ojata shores, lying between the Emerado and 

 Gladstone beaches, no ridge of gravel and sand nor line of erosion was 

 observed where they were crossed on the international boundary and else- 

 where during my exploration in Manitoba, excepting a slight beach ndge, 

 3 to 5 feet high, which runs from Pomeroy, in section 19, township 5, range 

 4, north-northwest through the east part of township 6, range 5, passing 

 about 2 miles west of Carman. 



Mr. Tyi-rell notes the lower Ojata beach on Kettle Hill, if my correla- 

 tion is true, at the elevation of 955 feet above the sea. 



THE gladstoist: beach. 



The extent of the southern part of Lake Agassiz at the time of for- 

 mation of the Gladstone beach is shown approximately on PI. XXXVI. 



Crossing the Red River near Belmont, N. Dak., about 20 miles south 

 of Grand Forks, at a height approximately 845 feet above the sea, the 



