﻿Vol. 
  12 
  March 
  4, 
  1922 
  No. 
  5 
  

  

  JOURNAL 
  

  

  OV 
  THB 
  

  

  WASHINGTON 
  ACADEMY 
  

   OF 
  SCIENCES 
  

  

  BOARD 
  OF 
  EDITORS 
  

   S. 
  F. 
  Blakb 
  Sidney 
  Paigb 
  E. 
  D. 
  Williamson 
  

  

  BtTSBAU 
  OP 
  PLANT 
  INDUSTKV 
  OBOLOOICAL 
  9DRVKV 
  OSOPHTSICAL 
  LABOKATORY 
  

  

  ASSOCIATE 
  EDITORS 
  

  

  H. 
  V. 
  Harlan 
  S. 
  A. 
  Rohwhs 
  

  

  BOTAMCAl 
  SOCXBTV 
  BNTOMOLOOICAL 
  BOCIBTI 
  

  

  N. 
  HOLUSTBR 
  G. 
  W. 
  ST0S5 
  

  

  BIOLOGICAL 
  SOCIBTT 
  OBOLOOICAL 
  ■OCIBTY 
  

  

  W. 
  F. 
  MaCGBRS 
  J. 
  R. 
  SWANTON 
  

  

  PHILOSOPHICAL 
  90CIBTV 
  ANTHBOPOLOOICAL 
  tOCtBTy 
  

  

  PUBLISHED 
  SBMI-MONTHLT 
  

   EXCEPT 
  IN 
  JULY, 
  AUGUST, 
  AND 
  SEPTEMBER, 
  WHEN 
  MONTHLY 
  

  

  BT 
  THB 
  

  

  WASHINGTON 
  ACADEMY 
  OF 
  SCIENCES 
  

  

  OFFICE 
  OP 
  PUBUCATION 
  

  

  211 
  CHURCH 
  STREET 
  

  

  BASTON, 
  PA. 
  

  

  Batcred 
  u 
  Second 
  Class 
  \f 
  alter, 
  January 
  25, 
  1919, 
  at 
  the 
  post-office 
  at 
  Baston, 
  Pa., 
  andar 
  tb« 
  

  

  Act 
  of 
  Angust 
  24, 
  1912. 
  Acceptance 
  for 
  mailing 
  at 
  special 
  rate 
  of 
  postage 
  proridsd 
  fat 
  

  

  io 
  Section 
  1103, 
  Act 
  dl 
  October 
  3. 
  1917. 
  Authorised 
  on 
  Tnly 
  3, 
  1918. 
  

  

  