WE RG Seth! 
om . ii 
Vou. 13 
POR RAL ES HBS Pt Oh RAY 
September 19, 1923 
No. 15 
JOURNAL 
- WASHINGTON ACADEMY 
4 OF SCIENCES 
ST a Fe ee ee eer ee ween 
BOARD OF EDITORS 
Srwnzy Paice 
GEOLOGICAL BURVEY 
E. D. WILLIAMSON 
GEOPHYSICAL LABORATORY — 
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NATIONAL MUSEUM 
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H. V. Haruan 
BOTANICAL SOCIETY 
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BIOLOGICAL SOCIETY 
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PHILOSOPHICAL SOCIETY 
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ENTOMOLOQICAL SOCIETY 
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GEOLOGICAL SOCIETY 
J. R. Swanton 
ANTHROPOLOGICAL SOCIETY 
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Entered as Second Class Matter, January 11, 1923, at the post-office at Baltimore, Md., under the 
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