Vol. II 



October 19, 1921 



No. 17 



JOURNAL 



OP THB 



WASHINGTON ACADEMY 

 OF SCIENCES 



Robert B. Sosman 



oaoPBTSICAL LABOKATOKT 



BOARD 01^ EDITORS 

 S. F. Blake 



BDRBAU or PLANT INDOSTBT 



Sidney Paige 



OBOLOOfCAL SDBVKV 



ASSOCIATE EDITORS 



H. V. Harlan 



BOTANICAL SOaSTT 



N. HOLLISTBR 



BIOLOGICAL SOCIBTf 



S. A. ROHVUTER 



BNTOMOLOGICAL SOCIBTV 



P. B. SiLSBBE 



PHILOSOPHICAL SOCIBTV 



G. W. Stosb 



OBOLOOICAL SOCISTy 



J. R. SWANTON 



ANTHROPOLOOICAL SOCIBTV 



PUBLISHED SEMI-MONTHLT 

 EXCEPT IN JULY, AUGUST, AND SEPTEMBER, WHEN MONTHLY 



BY THB 



WASHINGTON ACADEMY OF SCIENCES 



OFFICE OF PUBLICATION 



211 CHURCH STREET 



EASTON, PA. 



Entered as Second Class Matter, January 25, 1919, at the post-office at Easton, Pa., under tht 



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. 



