Vol. 1. No. 10. 



December 19, 1911. 



JOUKNAL 



OF THE 



WASHINGTON ACADEMY 



OF SCIENCES 



BOARD OF EDITORS 

 George K. Burgess Barton W. Evermann Frederick Leslie Ransome 



BUBEAU OF STANDARDS BUREAU OF E1SHERIES GEOLOGICAL 8URVET 



PUBLISHED SEMI-MONTHLY 

 EXCEPT IN JULY, AUGUST AND SEPTEMBER, WHEN MONTHLY, 



BY THE 



WASHINGTON ACADEMY OF SCIENCES 



OFFICE OF PUBLICATION 



THE WAVERLY PRESS 



BALTIMORE, MD. 



