Record. xxvii 



Messrs. James S. Lee and L. S. Parker were elected to 

 membership. 



Febeuaky 20, 1911. 



President Trelease in the chair; attendance 45. 



Mr. James Newton Baskett addressed the Academy on 

 ''Some Delusions Concerning the Economic Value of 

 Birds.*' 



The following were elected to membership : J. C. Bran- 

 ner, James E. Brock, Leo Loeb, A. G. Schuricht and Geo. 

 W. Wallace. 



Maech 6, 1911. 



President Trelease in the chair; attendance 47. 



Mr. Malcolm E. Wilson gave an illustrated account of 

 ''Some Geological Features in the Yellowstone National 

 Park." 



Mr. Geo. G. Whitelaw was elected to membership. 



Maech 20, 1911. 



President Trelease in the chair; attendance 50. 



Mr. J. Andrew Drushel gave an illustrated account of 

 his "Studies in Glacial Geology in St. Louis and Vicin- 

 ity.""" 



Professor F. E. Nipher spoke on "An Interesting Opti- 

 cal Elusion." 



Mr. C. L. Sampson was elected to membership. 



The death of Professor J. W. Van't Hoff, an honorary 

 member, and of Dr. Wm. B. Outten, an active member, 

 was announced. 



Apeil 3, 1911. 



President Trelease in the chair ; attendance 30. 



Dr. Leo Loeb presented a paper entitled "The Parthe- 

 nogenetic Development of the Ova in the Mammalian 

 Ovary. ' ' 



Mr. H. A. Wheeler spoke on the "Oil Fields of Illi- 

 nois." 



Dr. Edmund A. Engler presented a paper entitled "Fig- 

 urate Numbers." 



