THE JOURNAL 



OF 



GENERAL PHYSIOLOGY 



EDITORS 

 JACQUES LOEB W. J. V. OSTERHOUT 



VOLUME 111, NO. 2 NOVEMBER 20, 1920 



PUBLISHED BIMONTHLY 



at mount royal and guilford avenues, baltimore, md. 

 By The Rockefeller Institute for Medical Research 



Copyright, 1920, by The Rockefeller Instii-ute for Medical Research 



Entered as second-class matter November 25, 1918, at the Post Office at Baltimore, Md., under the Act of March 3, 1879. 



