﻿Journal 
  of 
  the 
  Washington 
  Academy 
  of 
  Sciences 
  

  

  This 
  JocKNAL, 
  the 
  oflScial 
  organ 
  ot 
  the 
  Washington 
  Academy 
  of 
  Sciences, 
  

   aims 
  to 
  present 
  a 
  brief 
  record 
  of 
  current 
  scientific 
  work 
  in 
  Washington. 
  To 
  this 
  

   end 
  it 
  publishes: 
  (1) 
  short 
  original 
  papers, 
  written 
  or 
  communicated 
  by 
  mem- 
  

   bers 
  of 
  the 
  Academy; 
  (2) 
  short 
  notes 
  of 
  current 
  scientific 
  literature 
  published 
  in 
  

   or 
  emanating 
  from 
  Washington; 
  (3) 
  proceedings 
  and 
  programs 
  of 
  meetings 
  of 
  

   the 
  Academy 
  and 
  aflfiliated 
  Societies; 
  (4) 
  notes 
  of 
  events 
  connected 
  with 
  the 
  

   scientific 
  life 
  of 
  Washington. 
  The 
  JouRNAt 
  is 
  issued 
  semi-monthly, 
  on 
  the 
  fourth 
  

   and 
  nineteenth 
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  Exchanges. 
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  •Volume 
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