Vol.. 9 ^ 



January 19, 1919 



No. 2 



JOURNAL 



OF THE 



WASHINGTON ACADEMY 

 OF SCIENCES 



A. S. Hitchcock 



BUREAU OF PI,ANT INDUSTRY 



BOARD OF EDiTORvS 

 J. FrankivIn Meyer 



BURBAU OF STANDARDS 



R. B. SOSMAN 

 GEOPHYSICAL LABORATORY 



ASSOCIATE EDITORS 



N. HOLUSTER 



BIOLOGICAL SOCIBTY 



J. B. Norton 



BOTANICAL SOCIETY 



Sidney Paige 



GEOLOGICAL SOCIBTY 



F. B. SilsbEE 



PHILOSOPHICAL SOCIBTY 



J. R. SWANTON 



ANTHROPOLOGICAL SOCIETY 



S. A.. ROHWER 



ENTOMOLOGICAL SOCIBTY 



PUBLISHED SEMI-MONTHLY 

 EXCEPT IN JULY, AUGUST, AND SEPTEMBER, WHEN MONTHLY 



BY THE 



WASHINGTON ACADEMY OF SCIENCES 



OFFICE OF PUBLICATION 



211 CHURCH STREET 



EASTON, PA. 



Application for transfer of entry as Second Class Matter made at the post-ofiBce at Easton, Pa., under 

 the Act of July 16, 1894. Acceptance for mailing at special rate of postage provided for in Sec- 

 tion 1103, Act of October 3, 1917, Authorized on July 3, 1918 



