NATURAL SCIENCES OP PHILADELPHIA. 417 



October 19. 



The President, Dr. Ruschenberger, in the chair. 



Twenty-six members present. 



A paper entitled "Observations on the structure of the Mana- 

 tee," b}' Henry C. Chapman, M.D., was presented for publication. 



October 26. 

 The President, Dr. Ruschenberger, in the chair. 

 Twenty-one members present. 



Wm. M. Davis, Jr., and Dr. B. F. Stephenson, U. S. N., were 

 elected members. 



Prof. Karl A. Zittel, of Munich, and Prof. Willi. C. H. Peters, 

 of Berlin, were elected correspondents. 



The committee to which the}' had been referred, recommended 

 the following papers to be published : 



