Proceedings. 5 



John B , Leiberg presented a paper "on some plants occur- 

 ring in Blue Earth and Pipestone counties but rare in the state." 

 [See paper B.] 



Professor J. A. Dodge, for the committee on the city 

 water supply appointed at the last meeting presented the re- 

 port. [See paper C] 



April 3, 1883. 



Eight persons present. 



A communication was read from Hon. W. D. Washburn, 

 M. C. presenting certain public documents.* 



Dr. A. H. Salisbury, Dr. C. M. Skinner, Hon. J. M. Shaw, 

 C. W. Johnson, A. B. Nettleton and Mrs. N. F. Grriswold were 

 elected members. 



Professor Dodge read a paper entitled, ''some results of 

 recent analyses of the water of the Mississippi river from dif- 

 ferent points in this state." [See paper D. j 



May 8, 1883. 



Twenty-nine persons present. 



Trustee T. B. Walker, presented a series of 196 models 

 from the U. S. Patent office selected by himself for the 

 Academy. 



W. A. Noyes, Ph. D., read a paper on "the oxidation of the 

 brom-toluenes," being a continuation of the December paperf 

 on the oxidation of toluene derivatives with potassium ferri- 

 cyanide and caustic potasli. [This paper has appeared in full in 

 the American Chemical Journal, vol. v. No. 2, p. 1.] 



Warren Upham, discussed "changes in the currents of the 

 ice o^ the last glacial epoch in eastern Minnesota." [See paper 

 E.j Also: "The topography and altitude of Minnesota. [See 

 paper F.] 



♦The titles of these documents will appear in the library lists. 

 tVol. FT. p. 417 these Bulletins. 



