^■\ Proceed i}}}is. 



Mur^Hiitui hisfcritnitf'ii, ilahii, in tii^- ^^late-. This is a suutherii in 

 >ect tliMt has been extending its range northward, something as 

 the Colorado potato-beetle has -eastward, and if it prove as des- 

 tructive here as farther south the cabbaga growers of this state 

 will have a new pest to contend with not inferior to the larva 

 of the imported cabbage butterfly. 



Secretary Hall gave a brief description of the geological 

 features of the Minnesota river valley where the United States 

 geological survey had been prosecuting field work during the 

 reason under his charge. 



AVarren Upham called attention to some of the features of 

 U 'iited States gi^ologist Chamberlain's classification of the glacial 

 moraines of the northwest. 



A report from the section of botany was received through 

 chairman Upham. 



Among the thin^is mentioned in this report was the collection of plants 

 recently received fnmi Miss Sara Manning of Lake City, consisting of the 

 following: 



Minnesota plants, - - 157 species. 

 Wisconsin plants, - - 49 " 



>ew Jersj^ plants, - - 15 " 



Total, - . 231 

 Of the 157 Minnesota species ^7 were already in the herbarium of the 

 Academy, leaving 120 new^ species thus added. Nearly all the specimens of 

 species are numerous enougli to leave several for exchanges. 



The thanks of the Academy were heartily voted to Miss 

 Manning for this excellent collection of plants. 



November 11, 1884. 



Sixty persons present. 



Secretary Hall being absent, Professor J. A. Dodge was 

 elected secretary pro-fern. 



Mr. A. F. Bechdolt, of Mankato, sent a paper to the Academy 

 on the discovery of *'an inter-glacial bed of peat near Mankato.'" 

 The peat occurred between two layers of glacial drift consisting 

 principally of clay, and it possesses some of the characters of 

 lignite. The bed was about two feet thick. Samples of the 

 material were presented the Academy illustrative of the paper. 



A communication was offered by Judge N. H. Hemiup having 

 reference to the question of a public building to be built for 

 uniting the places of meeting of this Academy and the Athe- 

 naeum library. Mr. Hemiup moved that a committee of three. 



