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



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

 M. Glatfelter was announced. 



Apkil 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 ^^Eecent 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." 



OCTOBEE 16, 1911. 



President Trelease in the chair; attendance 45. 

 Dr. Adolf Alt presented to the museum a specimen of 

 Haliotis tuterculata from California. 



