1 94 Proceedings 



226th Meeting, October 15, 1895. 



Nine persons present; C. P. Berkey presiding pro tern. 



L. E. Griffin was elected to membership. 



Program : 



A Review of the Springfield meeting of the American As- 

 sociation for the Advancement of Science, by Herbert W 

 Smith. 



The Suppression of Crime, by Dr. Albert Schneider (read 

 by Secretary Hall). 



Some Geological Features of the vicinity of Franconia, 

 Minn., by Chas. P. Berkey. 



[abstract.] 

 Attention was called to the physiographic features at Franconia, 

 Minn. A gorge is cut in the sedimentary series to the depth of 150 to 

 200 feet below the adjacent upland plain and extends westward from the 

 St. Croix river gorge proper about half a mile. It is the lower portion 

 of a small creek which sinks into the sand some distance above the 

 gorge and issues as s.prings within the gorge itelf. The gorge is con- 

 sidered entirely post-glacial and due to the work of the present stream 

 supplemented by the powerful springs issuing at the lower horizons. 

 The rock formation being composed of fine sand of the St. Croix series 

 is readily disintegrated and easily transported by such agencies. 



227th Meeting, January 7, 1896. 



Afternoon session at 2 P. M., in the lecture room of Pro- 

 fessor of Public Health, University of Minnesota, Engineer- 

 ing Building. Thirty persons present. Dr. Chas. N. Hewitt, 

 Chairman of the Section of Sanitary Science, presided and 

 gave an address on the qualities of good water supply for 

 public use. The address was a resume of the present methods 

 of examining, in a sanitary way, a water supply. It was illus- 

 trated by a large number of cultures, by slides showing the 

 more common mechanical impurities under the microscope, 

 and a large number of slides to show the more common bacilli 

 of diseases connected in a more or less direct way with drink- 

 ing waters. 



C. W. Hall enumerated the chief artesian basins of the 

 northwestern states, particularly of the Dakotas, Minnesota, 

 and Wisconsin. The conditions of successful supply were dis- 

 cussed, and the more pronounced chemical characters named 



