Vol. V No- ^ 



April 4, 1915 



JOUKNAL 



OF THE 



WASHINGTON ACADEMY 



OF SCIENCES 



BOARD OF EDITORS 

 Fred. E. Wright William R. Maxon Edbon S. BASTtN 



GEOLOOKAL BUBVBT 



afiOPBTStCAI. LABOKATOBr NATIONAL MU8EDM 



PUBLISHED SEMI-MONTHLl 

 EXCEPT IN JULY, AUGUST, AND SEPTEMBER, WHEN MONTHLY. 



WASHINGTON ACADEMY OF SCIENCES 



OyFICB OP PUBLICATION 



THE WAVERLY PRESS 



BALTIMORE, MD. 



