﻿The 
  NATIONAL 
  

  

  GEOGRAPHIC 
  

  

  MAGAZINE 
  

  

  MARCH, 
  1922 
  

   CONTENTS 
  

  

  i^***£ 
  

  

  L 
  Fit 
  i? 
  102 
  

  

  Prehistoric 
  Telephone 
  Days 
  

  

  With 
  17 
  Illustrations 
  ALEXANDER 
  GRAHAM 
  BELL 
  

  

  J. 
  F. 
  ROCK 
  

  

  Hunting 
  the 
  Chaulmoogra 
  Tree 
  

  

  With 
  40 
  Illustrations 
  

  

  Amid 
  the 
  Snows 
  of 
  Switzerland 
  

  

  Sixteen 
  Full-Page 
  Engravings 
  

  

  The 
  Hill 
  Tribes 
  of 
  Burma 
  

  

  With 
  22 
  Illustrations 
  SIR 
  GEORGE 
  SCOTT, 
  K. 
  C. 
  I. 
  E. 
  

  

  The 
  Pueblo 
  Bonito 
  Expedition 
  of 
  the 
  

   National 
  Geographic 
  Society 
  

  

  With 
  11 
  Illustrations 
  NEIL 
  M. 
  JUDD 
  

  

  Fighting 
  Insects 
  with 
  Airplanes 
  

  

  With 
  6 
  Illustrations 
  C. 
  R. 
  NEILLIE 
  and 
  J. 
  S. 
  HOUSER 
  

  

  PUBLISHED 
  BY 
  THE 
  

  

  NATIONAL 
  GEOGRAPHIC 
  SOCIETY 
  

  

  HUBBARD 
  MEMORIAL 
  HALL 
  

  

  WASHINGTON, 
  D.C. 
  

  

  13.50 
  A 
  

  

  y5S 
  

  

  