﻿CONTENTS 
  

   Original 
  Papers 
  

  

  Page 
  

  

  Zoology. 
  — 
  The 
  possibility 
  of 
  control 
  of 
  Heterodera 
  radicicola 
  and 
  other 
  plant-injurious 
  

   nemas 
  by 
  means 
  of 
  predatory 
  nemas, 
  especially 
  by 
  Mononchus 
  papillatus 
  Bastian. 
  

   G. 
  Steiner 
  and 
  Helen 
  Heinly 
  367 
  

  

  OFFICERS 
  OF 
  THE 
  ACADEMY 
  

   President: 
  W. 
  J. 
  Humphrbys, 
  Weather 
  Bureau. 
  

   Corresponding 
  Secretary: 
  Francis 
  B. 
  Silsbee, 
  Bureau 
  of 
  Standards. 
  

   Recording 
  Secretary: 
  William 
  R. 
  Maxon, 
  National 
  Museum. 
  

   Treasurer: 
  R. 
  L. 
  Faris, 
  Coast 
  and 
  Geodetic 
  Survey. 
  

  

  