﻿Smithsonian 
  Report, 
  1927. 
  — 
  Klemperer 
  

  

  Plate 
  6 
  

  

  1'^ 
  ^'"^T^ 
  

  

  1.— 
  Central 
  Landing 
  Ski 
  

  

  2.— 
  Spot 
  Landing 
  

  

  