﻿442 
  F. 
  Waldo 
  — 
  Wind 
  Velocities 
  in 
  the 
  United 
  States. 
  

  

  These 
  curves 
  begin 
  and 
  end 
  at 
  O 
  h 
  (midnight) 
  and 
  are 
  all 
  in 
  

  

  the 
  same 
  scale. 
  At 
  the 
  top 
  of 
  the 
  diagram 
  giving 
  the 
  curves 
  

  

  the 
  two 
  hour 
  spaces 
  are 
  indicated 
  by 
  short 
  lines, 
  but 
  the 
  miles 
  

  

  per 
  hour 
  have 
  been 
  indicated 
  only 
  in 
  general 
  by 
  vertical 
  scales 
  

  

  January. 
  July. 
  

  

  at 
  the 
  sides 
  of 
  the 
  curves 
  because 
  it 
  would 
  make 
  the 
  reproduc- 
  

   tion 
  of 
  the 
  diagram 
  less 
  simple 
  to 
  place 
  the 
  scales 
  properly 
  

   opposite 
  each 
  curve. 
  The 
  miles 
  per 
  hour 
  of 
  wind 
  at 
  h 
  is 
  given 
  

   at 
  the 
  beginning 
  of 
  each 
  curve. 
  

  

  