JOURNAL 



OF THE 



WASHINGTON ACADEMY 



OF SCIENCES 



VOLUME III, 1913 



BOARD OF EDITORS 



George K. Burgess Frederick Leslie Ransome Carl S. Scofield 



BUBEAU OP STANDARDS GEOLOGICAL SURVEY BUREAU OF PLANT INDUSTRY 



PUBLISHED SEMI-MONTHLY 



EXCEPT IN JULY, AUGUST AND SEPTEMBER. WHEN MONTHLY, 



/ 



BY THE 



WASHINGTON ACADEMY OF SCIENCES 



office of publication 



THE WAVERLY press 



