Vol,. 9 



November 19, 1919 



No. 19 



JOURNAL 



OF THE 



WASHINGTON ACADEMY 



y 



OF SCIENCES 



A. S. Hitchcock 



BUBSAD OF PLANT INDUSTRY 



BOARD OF EDITORS 

 J. Franklin Meyer 



BCRSAD OF STANDARDS 



R. B. SOSMAM 

 OBOPBV8ICAL LABORATOBT 



ASSOCIATE EDITORS 



H. V. Harlan 



BOTANICAL SOCIBTY 



N. HOLLISTER 



BIOLOGICAL SOCISTY 



E. C. McKelvy 



CHEMICAL SOCIBTy 



Sidney Paige 



GBOLOGICAL SOCIBTY 



S. A. ROHWER 



8NTOHOLOOICAL SOCIBTY 



F. B. SiLSBEE 



PHILOSOPHICAL SOCIBTY 



J, R. Swanton 



ANTHROPOLCaiCAL SOCIBTY 



PUBLISHED SEMI-MONTHLY 

 EXCEPT IN JULY, AUGUST, AND SEPTEMBER, WHEN MONTHLY 



BY THB 



WASHINGTON ACADEMY OF SCIENCES 



OFFICE OP PUBLICATION 



211 CHURCH STREET 



EASTON, PA. 



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

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

 /■ Section 1103. Act of October 3, 1917. Authorised on July 3. 1918 



