1911.] natural sciences op philadelphia. 23 



February 21. 

 Mr. Witmer Stone in the Chair. 



Forty persons present. 



The Publication Committee reported the receipt of papers under 

 the following titles : 



" Micro-Spectroscopic Observations/' by Frank J. Keeley (Feb- 

 ruary 14). 



" Variations in some Jamaican Species of Pleurodonta," by Amos 

 P. Brown (February 16). 



Dr. Henry Skinner made a communication on some of the 

 world's interesting butterflies. (No abstract.) 



The following were elected members : 

 Mrs. Arthur Biddle. 

 Alexander Brown. 

 William H. Ran. 

 Edward A. Schumann, M.D. 

 Alexander A. Uhle, M.D. 



The following were ordered to be printed : 



