Proceedings 335 



294^71 Meeting, Monday, November ith, 1907, Academy's Museum Room. 



Vice-President Winchell presiding; 13 present. 



Mr. E. E. Woodworth, St. Paul, was proposed for membership and 

 elected. 



At 8:20 Professor C. W. Hall gave a verj'- interesting paper on 

 "North American Waterways," beginning with an outline of the 

 river systems of both North and South America, then giving details 

 of the proposed improvements of our Mississippi Valley system . 



Discussion followed until adjournment at 10:10. 



H. Gale, Secretary. 



295th Meeting, Monday, December 2d, 1907, Academy's Museum Room. 



President Walker presiding; 12 present. 



The President reported informally that the Academy's invitation 

 to the A. A. A. S. to hold its 1908-9 meeting here had been sent to 

 some 20 societies and institutions of the state to join the Academy in 

 this invitation. If this invitation is accepted it will be 25 years 

 since the previous meeting of the A. A. A. S. here. The Secretary 

 of the American Economic Association had also been written to by 

 the President, who was authorized to extend the same invitation to 

 this body. 



At 8:20 Dr. P. W. Sardeson began a paper in "The Principle of 

 River Erosion," being a criticism of the usual view as described by 

 Salisbury and Chamberlin, and showing its application to the Mis- 

 sissippi river from Fort Snelling to the Falls of St. Anthony. 



Discussion by Winchell, Upham, Hall, Norton, and Walker. Ad- 

 journment at 9:45. 



H. Gale, Secretary. 



29Qth and Annual Meeting, Monday, January Gth, 1908, Academy'i 



Museum Room. 



President Walker presiding; 15 persons present. 



The President reported informally that the invitation of the 

 Academy, seconded by some 20 other state organizations, had been 

 presented last month to the A. A. A. S. at its Chicago meeting and our 

 cause forcibly presented by Professors Winchell, Hall and himself. 

 They found that Baltimore had been already selected by the com- 

 mittee for the next meeting and that Boston had been in the minds 

 of the committee for the following one. But no oflBcial action had 

 been taken on this latter, and, after the presentation of the claims 

 of Minneapolis, our committee was assured that Minneapolis had every 

 prospect for this meeting of 1909-1910. This would probably be a 

 summer meeting, but a regular, not a special one. 



The paper of the evening was by Mr. Warren Upham on the "Pro- 



