THE JOURNAL 



OF 



GENERAL PHYSIOLOGY 



EDITORS 



JACQUES LOEB W. J. V. OSTERHOUT 



VOLUME II, NO. 4 MARCH 20, 1920 



PUBLISHED BIMONTHLY 



AT MOUNT ROYAL AND GUILFORD AVENUES, BALTIMORE, MD. 



BY The Rockefeller Institute for Medical Research 



Copyright, 1920, by The Rockefeller Institute 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 



