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  THE 
  NATIONAL 
  GEOGRAPHIC 
  MAGAZINE 
  

  

  EDINBURGH 
  CASTLE 
  PROM 
  PRINCES 
  STREET 
  GARDENS: 
  EDINBURGH, 
  SCOTLAND 
  

  

  It 
  was 
  in 
  the 
  shadow 
  of 
  this 
  historic 
  pile 
  that 
  Alexander 
  Graham 
  Bell 
  spent 
  his 
  boyhood 
  — 
  

   the 
  period 
  during 
  which 
  he 
  began 
  the 
  experiments 
  which 
  led 
  up 
  to 
  his 
  scientific 
  achievements 
  

   of 
  later 
  years 
  and 
  which 
  he 
  characterizes 
  as 
  "Prehistoric 
  Telephone 
  Days." 
  

  

  