﻿Smithsonian 
  Report, 
  1927. 
  — 
  Klemperer 
  

  

  Plate 
  9 
  

  

  1.— 
  Wing-Tip 
  Brakes. 
  (Kollerj 
  

  

  2.— 
  Starting 
  the 
  Glider. 
  (Darmstadt) 
  

  

  