Proceedings. 39 



tinued with unabated zeal until his removal from the State, 

 October 1890, when he came to Minneapolis with his family 

 for permanent residence. He immediately identified himself 

 with the Minnesota Academy of Natural Sciences, was 

 elected in January, 1892, Corresponding Secretary of the 

 Academy, which position he held at the time of his death. 

 Mr. Pratt was in attendance at the meetings of theAcademj'^ 

 whenever his health would permit, and at all times was 

 ready to advance the interest of the meetings by contribut- 

 ing to discussions and papers from his own wide range of 

 obscsvation and experience. His wide acquaintance with 

 scientific men throughout the country and abroad formed 

 while he was secretar3^ and curator of the Davenport 

 Academy proved of great value to the Minnesota Academy 

 in his work of extending and systematizing the exchanges of 

 the institution with kindred academies and societies. 



February 6, 1894. 



Ten persons present, with C. P. Berkey presiding. 

 The following program was presented : 



Note on some water divides in northeastern Minnesota, 

 by Ulysses Sherman Grant. 



[abstract.] 



The International boundary between Lake Superior and Rainy lake 

 is often supposed to be a continuous water course, except in one place ; but 

 such, however, is not the case, as four water divides occur in this distance. 

 The first is between Rove and Rose (Mud) lakes in Cook county. The 

 second is the divide between North and South lakes, also in Cook county; 

 the waters of South lake find their way into the Gulf of St. Lawrence and 

 those of North lake into Hudson Bay. There is also a divide between 

 Swamp (Oak) and Ottertrack lakes at the east end of Hunter's Island, the 

 boundary stream flowing northwest from Saganaga lake through 

 Canadian Territory ; this stream finally reaches the boundary again at 

 Lac la Croix, about fifty miles west of Saganaga lake. The distance 

 between Swamp and Ottertrack lakes is less than one-fourth of a mile, 

 and this alone prevents Hunter's "Island" from being an island. The 

 fourth divide is between Lac la Croix and Loon lake, in St. Louis county. 



Brule lake, a good sized body of water in Cook county, has two 

 distinct outlets. The water flowing from the eastern end of this lake 

 reaches Lake Superior through the Brul<5 river, and that from the western 



