﻿38 
  THE 
  DISPERSION 
  OF 
  THE 
  GIPSY 
  MOTH. 
  

  

  Table 
  Y. 
  — 
  Temperature, 
  direction, 
  and 
  velocity 
  of 
  wind, 
  etc. 
  — 
  Continued. 
  

  

  PORTLAND, 
  ME. 
  

  

  Date. 
  

  

  Hours 
  7 
  a. 
  m. 
  to 
  7 
  p. 
  m. 
  

  

  Maximum 
  

   tempera- 
  

   ture. 
  

  

  Direction 
  of 
  

   wind. 
  

  

  Velocity 
  

   of 
  wind. 
  

  

  1907. 
  

   May 
  10 
  

   19 
  

  

  10 
  to 
  2 
  

  

  ° 
  F. 
  

  

  65 
  to 
  67 
  

   67 
  to 
  70 
  

  

  65 
  

  

  67 
  to 
  75 
  

  

  73 
  to 
  81 
  

  

  66 
  to 
  77 
  

  

  67 
  to 
  69 
  

  

  65 
  

   67 
  

  

  66 
  to 
  71 
  

  

  67 
  to 
  75 
  

   78 
  to 
  87 
  

   69 
  to 
  84 
  

  

  65 
  to 
  75 
  

   66 
  

  

  65 
  to 
  67 
  

   67 
  to 
  70 
  

  

  66 
  to 
  68 
  

  

  66 
  to 
  70 
  

  

  68 
  

   65 
  to 
  67 
  

   65 
  to 
  74 
  

  

  65 
  

  

  67 
  to 
  68 
  

  

  65 
  

   65 
  to 
  69 
  

   65 
  to 
  67 
  

   65 
  to 
  68 
  

   65 
  to 
  67 
  

   65 
  to 
  66 
  

   65 
  to 
  68 
  

  

  66 
  

  

  65 
  to 
  7\ 
  

  

  65 
  to 
  77 
  

  

  66 
  

  

  68 
  to 
  80 
  

   65 
  to 
  75 
  

  

  65 
  to 
  75 
  

  

  66 
  to 
  7% 
  

  

  66 
  to 
  76 
  

   65 
  to 
  73 
  

  

  67 
  

  

  67 
  to 
  74 
  

   65 
  to 
  73 
  

   84 
  to 
  88 
  

  

  65 
  to 
  69 
  

  

  66 
  to 
  76 
  

  

  74 
  to 
  80 
  

   66 
  to 
  70 
  

  

  W 
  

  

  Miles 
  

   per 
  hour. 
  

   12 
  to 
  32 
  

  

  10 
  to 
  2... 
  

  

  SE... 
  . 
  

  

  10 
  to 
  14 
  

  

  20 
  

  

  1 
  to 
  3 
  

  

  W 
  

  

  18 
  to 
  20 
  

  

  1908. 
  

   Apr. 
  23 
  

   26 
  

  

  10 
  to 
  5 
  

  

  w. 
  

  

  13 
  to 
  20 
  

  

  10 
  to 
  7 
  

  

  sw., 
  w. 
  

  

  N, 
  NW. 
  

  

  s 
  

  

  10 
  to 
  21 
  

  

  May 
  11 
  

   12 
  

  

  11 
  to 
  1,3 
  to 
  5 
  

  

  12 
  to 
  23 
  

  

  12 
  to 
  2, 
  4 
  to 
  5 
  

  

  13 
  to 
  14 
  

  

  13 
  

  

  10 
  to 
  11 
  

  

  N 
  

  

  12 
  

  

  18 
  

  

  3 
  to 
  4 
  

  

  S 
  

  

  10 
  

  

  19 
  

  

  11 
  to 
  3 
  

  

  5 
  

  

  11 
  to 
  18 
  

  

  26 
  

  

  11 
  to 
  7 
  

  

  s 
  

  

  12 
  to 
  18 
  

  

  27 
  

  

  8 
  to 
  5 
  

  

  W., 
  NW 
  

  

  W.,SW. 
  

  

  NW. 
  

  

  10 
  to 
  15 
  

  

  31 
  

  

  7to5... 
  

  

  13 
  to 
  20 
  

  

  1909. 
  

   May 
  6 
  

   11 
  

  

  9 
  to 
  5 
  

  

  14 
  to 
  19 
  

   11 
  

  

  1 
  to 
  2 
  

  

  S 
  

  

  NW 
  

  

  12 
  

  

  11 
  to 
  5 
  

  

  21 
  to 
  36 
  

  

  13 
  

  

  12 
  to 
  3 
  

  

  W. 
  

  

  11 
  to 
  13 
  

  

  15 
  

  

  1 
  to 
  6... 
  

  

  NW 
  

  

  12 
  to 
  14 
  

  

  26 
  

  

  9 
  to 
  4 
  

  

  NW.,S 
  

  

  SE 
  

  

  10 
  to 
  17 
  

  

  27 
  

  

  12 
  to 
  1 
  

  

  10 
  

  

  30 
  

  

  2 
  to 
  6 
  

  

  NW 
  

  

  20 
  to 
  24 
  

  

  31 
  

  

  

  NW. 
  

  

  12 
  to 
  24 
  

  

  1910. 
  

   Apr. 
  14 
  

  

  27 
  

  

  1 
  to 
  3 
  

  

  w 
  

  

  20 
  to 
  21 
  

  

  12 
  to 
  3 
  

  

  sw 
  

  

  10 
  to 
  15 
  

  

  May 
  10 
  

   17 
  

  

  2 
  to 
  3 
  

  

  w 
  

  

  19 
  

  

  11 
  to 
  5 
  

  

  SE.,S 
  

  

  NW., 
  S 
  

  

  S 
  

  

  11 
  to 
  15 
  

  

  20 
  

  

  9 
  to 
  1 
  

  

  11 
  to 
  15 
  

  

  24 
  

  

  11 
  to 
  5 
  

  

  10 
  to 
  16 
  

  

  25 
  

  

  12 
  to 
  2 
  

  

  S 
  

  

  14 
  to 
  18 
  

  

  26 
  

  

  12 
  to 
  2 
  

  

  S 
  

  

  11 
  to 
  15 
  

  

  27 
  

  

  12 
  to 
  4 
  

  

  SE 
  

  

  SE 
  

  

  10 
  to 
  15 
  

  

  1911. 
  

   Apr. 
  27 
  

  

  28 
  

  

  2 
  to 
  3 
  

  

  10 
  

  

  9 
  to 
  10, 
  2 
  to 
  9 
  

  

  s.,sw 
  

  

  s 
  

  

  10 
  to 
  14 
  

  

  29 
  

  

  1 
  to 
  6 
  

  

  10 
  to 
  12 
  

  

  May 
  2 
  

  

  7 
  

  

  8 
  to 
  1 
  

  

  w 
  

  

  18 
  to 
  20 
  

  

  8 
  to 
  9, 
  10 
  to 
  6. 
  . 
  

  

  W., 
  NW 
  

  

  s 
  

  

  10 
  to 
  18 
  

  

  8 
  

  

  10 
  to 
  5 
  

  

  13 
  to 
  19 
  

  

  10 
  

  

  8 
  to 
  11, 
  1 
  to 
  3, 
  4 
  to 
  6 
  

  

  NW., 
  N.,S... 
  

  

  s.,sw 
  

  

  W., 
  NW 
  

  

  NW., 
  W 
  

  

  s 
  

  

  10 
  to 
  15 
  

  

  12 
  

  

  6 
  to 
  7, 
  10 
  to 
  2 
  

  

  11 
  to 
  18 
  

  

  13 
  

  

  8 
  to 
  5 
  

  

  14 
  to 
  20 
  

  

  16 
  

  

  10 
  to 
  6 
  

  

  12 
  to 
  16 
  

  

  17 
  

  

  12 
  to 
  1 
  

  

  11 
  

  

  18 
  

  

  1 
  to 
  3. 
  

  

  SE 
  

  

  11 
  

  

  21 
  

  

  9 
  to 
  9 
  . 
  . 
  

  

  S 
  

  

  11 
  to 
  18 
  

  

  22 
  

  

  2 
  to 
  5 
  

  

  s 
  

  

  10 
  

  

  27 
  

  

  11 
  to 
  3 
  

  

  s 
  

  

  12 
  to 
  16 
  

  

  28 
  

  

  10 
  to 
  9 
  

  

  s 
  

  

  11 
  to 
  20 
  

  

  29 
  

  

  9 
  to 
  6 
  

  

  s 
  

  

  10 
  to 
  12 
  

  

  30 
  

  

  1 
  to 
  4 
  

  

  s 
  

  

  10 
  to 
  13 
  

  

  

  

  

  

  In 
  order 
  to 
  study 
  these 
  tables 
  properly 
  the 
  data 
  from 
  each 
  State 
  

   should 
  be 
  considered 
  separately. 
  Hatching 
  takes 
  place 
  later 
  in 
  the 
  

   vicinity 
  of 
  Portland, 
  Me., 
  and 
  Concord, 
  N. 
  H., 
  than 
  in 
  the 
  terri- 
  

   tory 
  surrounding 
  Boston, 
  because 
  the 
  season 
  is 
  later. 
  In 
  Massachu- 
  

   setts 
  the 
  same 
  conditions 
  prevail 
  in 
  all 
  of 
  the 
  towns 
  which 
  are 
  on 
  

   the 
  watersheds 
  of 
  the 
  Merrimac 
  and 
  Connecticut 
  Rivers. 
  An 
  ex- 
  

   amination 
  of 
  the 
  records, 
  however, 
  shows 
  that 
  the 
  prevailing 
  winds 
  

  

  