Voi<. 9 



March 4, 19 19 



No. 5 



JOURNAL 



OP THB 



WASHINGTON ACADEMY 

 OF SCIENCES 



A. S. Hitchcock 



BORBAU OP PLANT INDU3TR7 



BOARD OF EDITORS 

 J. Franklin Meyer 



BURBAU OP STANDARDS 



R. B. SOSMAN 

 C80PBYSICAL LABORATORY 



ASSOCIATE EDITORS 



N. HOLUSTER 



BIOLOGICAL SOCISTV 



J. B. Norton 



BOTANICAL socwrr 



Sidney Paige 



GEOLOGICAL SOCIff> "» 



S. A. ROHWER 



BNTOMOLOGICAL SOCIBTY 



J. R. SWANTON 



ANTHROPOLOGICAL SOCISTT 



F. B. SiLSBEB 



PHILOSOPHICAL SOCISTT 



PUBUSHED SEMI-MONTHLY 

 EXCEPT IN JULY, AUGUST, AND SEPTEMBER, WHEN MONTHLY 



BY THB 



WASHINGTON ACADEMY OF SCIENCES 



OFFICE OF PUBLICATION 



ail CHURCH STREET 



EASTOW, PA, 



Kntered as Second Class Matter, January 25, 1919, at the post-offlce at Easton, Pa., under the 

 Act of August 24, 1912. Acceptance for mailing at special rate of postage provided for in 

 Section 1103, Act of October 3, 1917. Authorized on July 3, 1918 



