PROCEEDINGS 



OF THE 



Society for 

 Experimental biology and Medicine 



TWENTY FOURTH MEETING 



CARNEGIE INSTITUTION'S 

 STATION FOR EXPERIMENTAL EVOLUTION 

 COLD SPRING HARBOR 

 LONG ISLAND, N. Y. 



JUNE 22, 1907 



Volume IV 

 No. 7 



(With Title Page, Index, Etc., for Volume IV.) 



NEW YORK 

 August i, 1907 



