﻿Bui. 
  1 
  19, 
  Bureau 
  of 
  Entomology, 
  U. 
  S. 
  Dept. 
  of 
  Agriculture. 
  

  

  Plate 
  XII. 
  

  

  Oak 
  Tree 
  Showing 
  Gipsy-Moth 
  Caterpillers 
  Spinning 
  to 
  the 
  

   Ground. 
  Position 
  of 
  Larvae 
  Indicated 
  by 
  Arrows. 
  

  

  Note 
  that 
  the 
  tree 
  is 
  partially 
  defoliated. 
  (Original.) 
  

  

  