xxviii Trans. Acad. Sci. of St. Louis. 



The death of Judge Wilbur F. Boyle and of Dr. Noah 

 M. Glatfelter was announced. 



Apeil 17, 1911. 



Vice-President Nipher in the chair; attendance 26. 



Professor C. A. Waldo presented a paper, illustrated 

 by diagrams and sections, on "The London Tubes." 



Messrs. Alexander H. Noel and L. J. Sexton were elect- 

 ed to membership. 



May 1, 1911. 



President Trelease in the chair ; attendance 150. 



Professor Thomas Jefferson Jackson See, of the Naval 

 Observatory at Mare Island, California, delivered an ad- 

 dress on "Recent Discoveries in Cosmogony." 



Mr. Hugh W. Thomasson was elected to membership. 



May 15, 1911. 



President Trelease in the chair ; attendance 30. 



Mr. Henry W. Anderson read a paper by Mr. H. T. A. 

 Hus, of the University of Michigan, on "The Origin of 

 Species in Nature." 



Mr. Adolphe M. Weiss was elected to membership. 



The death of Professor Halsey Cooley Ives was re- 

 ported. 



June 5, 1911. 



President Trelease in the chair ; attendance 15. 



Professor C. M. Woodward addressed the Academy on 

 "The Theory of an Air Propeller with Haelicoidal 

 Blades." 



Mr. George A. Lindsay read a paper on "The Annual 

 Rainfall and Temperature of the United States." 



October 16, 1911. 



President Trelease in the chair; attendance 45. 

 Dr. Adolf Alt presented to the museum a specimen of 

 Haliotis tuherctilata from California. 



