﻿Bui. 
  32, 
  Bureau 
  of 
  Forestry, 
  U. 
  S. 
  Dept. 
  of 
  Agriculture. 
  

  

  Plate 
  VI. 
  

  

  Fig. 
  2.— 
  A 
  Hardwood 
  Bottom. 
  

  

  