﻿Vol. 
  12 
  June 
  4, 
  1922 
  No. 
  11 
  

  

  JOURNAL 
  

  

  OF 
  THE 
  

  

  WASHINGTON 
  ACADEMY 
  

   OF 
  SCIENCES 
  

  

  BOARD 
  OF 
  EDITORS 
  

   S. 
  F. 
  Blakb 
  Sidnht 
  Paigb 
  E. 
  D. 
  Wuxiamson 
  

  

  BDUAO 
  0» 
  9LAm 
  INDOaTST 
  OBOLOOICAL 
  BDB«VY 
  aaOFRTSICAI, 
  LABOKATOST 
  

  

  ASSOCIATE 
  EDITORS 
  

  

  H. 
  V. 
  Haxi^n 
  & 
  A. 
  ROHWSK 
  

  

  SOTAHICAL 
  90CISTT 
  BNTOMOLOOICAL, 
  SOCIBTV 
  

  

  N. 
  HOUUSTSB 
  G. 
  W. 
  STOS8 
  

  

  BIOIOOICAL 
  SOCtSTI 
  GSOLOOICAI. 
  SOCIBTV 
  

  

  W. 
  F. 
  MSGOSKS 
  J. 
  R. 
  SWANTOM 
  

  

  rBK.OSOrRICAI, 
  SOCISTT 
  ANTHROPOLOGICAL 
  SOCIETY 
  

  

  PUBUSHBD 
  SSm-HONTHLT 
  

   8XCBPT 
  IN 
  JtfLY, 
  AUOCST, 
  AND 
  SSPTBlfBSK, 
  WHSK 
  MONTHI.T 
  

  

  BY 
  TBB 
  

  

  WASHINGTON 
  ACADEMY 
  OF 
  SCIENCES 
  

  

  OVPICB 
  OF 
  PtTBUCATION 
  

  

  211 
  CHURCH 
  STREET 
  

  

  SASTON, 
  PA. 
  

  

  Entered 
  as 
  Second 
  Class 
  Matter, 
  January 
  25, 
  1919, 
  at 
  the 
  post-ofiSce 
  at 
  'Easton, 
  Pa., 
  under 
  the 
  

   Act 
  of 
  August 
  24, 
  1912. 
  Acceptance 
  for 
  mailin? 
  at 
  special 
  rate 
  of 
  postage 
  provided 
  for 
  

   In 
  Section 
  1103, 
  Act 
  of 
  October 
  3, 
  1917. 
  Authorized 
  on 
  July 
  3, 
  1918. 
  

  

  