- Vor. 13 | February 19, 1923 No. 4 
JOURNAL 
_OF THE 
WASHINGTON ACADEMY 
OF SCIENCES 
BOARD OF EDITORS 
SIDNEY PAIGE 
BE. D. WitiuiamMson EB. P. Kiuire 
GEOLOGICAL SURVEY GEOPHYSICAL LABORATORY NATIONAL MUSEUM 
ASSOCIATE EDITORS 
H, V. Harnan S. A. Ronwrr 
BOTANICAL SOCIETY 
ENTOMOLOGICAL SOCIETY 
N. Hou1ister 
G. W. Stross 
BIOLOGICAL SOCIETY GEOLOGICAL SOCIETY 
W. F. Mreaarrs J. R. SWANTON 
PHILOSOPHICAL SOCIETY 
ANTHROPOLOGICAL SOCIETY 
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Exe nd Class rig January 11, 1923, at the Leas eg at Baltimore, ei pee the 
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in Section 1103, Act of October 3, 1917, Authorized on July 3, 1 1518. ¢ 
