﻿Rain, 
  Wind, 
  and 
  Cyclones. 
  

  

  225 
  

  

  and 
  Ireland. 
  The 
  wind 
  directions 
  show 
  that 
  the 
  air 
  was 
  

   circulating 
  around 
  the 
  centre 
  of 
  the 
  depression, 
  and 
  was 
  

   rising 
  over 
  the 
  whole 
  of 
  it, 
  with 
  the 
  exception, 
  perhaps, 
  of 
  

   a 
  small 
  area 
  to 
  the 
  south-west. 
  It 
  was 
  travelling 
  from 
  west 
  

   to 
  east 
  at 
  a 
  velocity 
  of 
  about 
  35 
  miles 
  per 
  hour, 
  and 
  the 
  wind 
  

   velocities 
  were 
  high. 
  The 
  irregular 
  nature 
  of 
  the 
  wind 
  

   directions 
  shown 
  by 
  the 
  arrows 
  is 
  most 
  probably 
  due 
  to 
  the 
  

   flow 
  of 
  air 
  from 
  areas 
  of 
  heavy 
  rainfall, 
  resulting 
  from 
  the 
  

   mechanical 
  effect 
  of 
  the 
  falling 
  rain. 
  To 
  the 
  east 
  of 
  the 
  storm 
  

   centre, 
  in 
  the 
  direction 
  of 
  Holland, 
  a 
  south-westerly 
  wind 
  

  

  Fig. 
  3. 
  

  

  and 
  westerly 
  wind 
  were 
  in 
  conflict, 
  and 
  rain 
  was 
  the 
  result 
  

   there 
  as 
  well 
  as 
  near 
  the 
  centre. 
  

  

  With 
  the 
  exception, 
  perhaps, 
  of 
  the 
  portions 
  near 
  their 
  

   centres, 
  the 
  cyclones 
  now 
  to 
  be 
  illustrated 
  do 
  not 
  show 
  a 
  

   regular 
  spiral 
  flow 
  of 
  the 
  lower 
  air 
  into 
  the 
  cyclone 
  ; 
  but 
  

   are 
  areas 
  where 
  several 
  winds 
  are 
  approaching 
  or 
  receding 
  

   from 
  an 
  area 
  of 
  low 
  pressure. 
  These 
  lower 
  winds 
  often 
  pass 
  

   over 
  or 
  beneath 
  each 
  other, 
  and 
  cause 
  rain. 
  

  

  Fig. 
  3 
  shows 
  the 
  conditions 
  in 
  a 
  cyclone 
  which 
  passed 
  over 
  

  

  