﻿Vol. 
  12 
  August 
  19, 
  1922 
  No. 
  14 
  

  

  JOURNAL 
  

  

  OI^ 
  THE 
  

  

  WASHINGTON 
  ACADEMY 
  

   OF 
  SCIENCES 
  

  

  BOARD 
  OF 
  EDITORS 
  

  

  S. 
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  BDUAU 
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  ASSOCIATE 
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  H. 
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  BOTAKICAI. 
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  BIMOOICAI, 
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  W. 
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  WASHINGTON 
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  OWICS 
  or 
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  211 
  CHURCH 
  STRBBT 
  

  

  BASTGN. 
  FA. 
  

  

  Entered 
  m 
  Second 
  Class 
  Matter, 
  January 
  2S, 
  1919, 
  at 
  the 
  post-office 
  at 
  Baston, 
  Pa., 
  under 
  the 
  

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

   h» 
  Section 
  1103, 
  Act 
  of 
  October 
  3, 
  1917. 
  Authorised 
  on 
  July 
  3, 
  1818. 
  

  

  