﻿CONTENTS 
  

  

  ORiGiNAt 
  Papers 
  

  

  Page 
  

  

  General 
  Science.— 
  Psychophysics 
  as 
  the 
  key 
  to 
  the 
  mysteries 
  of 
  physics 
  and 
  of 
  meta- 
  

   physics. 
  Leonard 
  Thompson 
  Troland 
  141 
  

  

  Proceedings 
  

  

  Washington 
  Academy 
  of 
  Sciences 
  162 
  

  

  Entomological 
  Society 
  163 
  

  

  