﻿32 
  

  

  THE 
  DISPERSION 
  OF 
  THE 
  GIPSY 
  MOTH. 
  

  

  was 
  highest, 
  during 
  the 
  years 
  1902 
  to 
  1911. 
  Table 
  III 
  show 
  T 
  s 
  the 
  

   wind 
  direction 
  during 
  the 
  same 
  number 
  of 
  days 
  for 
  the 
  lowest 
  of 
  the 
  

   maximum 
  temperatures. 
  

  

  Table 
  II. 
  — 
  Direction 
  of 
  wind 
  during 
  20 
  days 
  of 
  highest 
  temperature 
  in 
  April 
  

   and 
  May, 
  1902-1911. 
  (From 
  records 
  of 
  the 
  United 
  States 
  Weather 
  Bureau 
  

   at 
  Boston, 
  Mass.) 
  

  

  Date. 
  

  

  Temper- 
  

   ature. 
  

  

  Direction 
  

   of 
  wind. 
  

  

  Date. 
  

  

  Temper- 
  

   ature. 
  

  

  Direction 
  

   of 
  wind. 
  

  

  Apr. 
  22, 
  1908 
  

  

  °F. 
  

  

  85 
  

   84 
  

   83 
  

   83 
  

   83 
  

   80 
  

   79 
  

   79 
  

   78 
  

   76 
  

   75 
  

   75 
  

   74 
  

   73 
  

   73 
  

   72 
  

   72 
  

   72 
  

   71 
  

   71 
  

  

  SW. 
  

   SW. 
  

   W.,NW. 
  

  

  s. 
  

  

  sw. 
  

   w. 
  

   w. 
  

  

  NW.. 
  SE. 
  

  

  SW. 
  

  

  sw. 
  

   s.,w. 
  

   sw. 
  

   w. 
  

  

  sw. 
  

  

  NW. 
  

  

  sw. 
  

  

  w. 
  

  

  w. 
  

  

  E., 
  SW. 
  

  

  w. 
  

  

  May 
  22, 
  1911 
  

  

  °F. 
  

   92 
  

  

  88 
  

   88 
  

   88 
  

   88 
  

   88 
  

   87 
  

   87 
  

   87 
  

   86 
  

   86 
  

   86 
  

   86 
  

   85 
  

   85 
  

   84 
  

   84 
  

   84 
  

   84 
  

   84 
  

  

  W. 
  

  

  Apr. 
  26, 
  1908 
  

  

  May 
  23, 
  1902 
  

  

  sw. 
  

  

  Apr. 
  29, 
  1903 
  

  

  May 
  18, 
  1903.... 
  

  

  w 
  

  

  Apr. 
  30, 
  1903 
  

  

  May 
  19, 
  1903 
  

  

  sw. 
  

  

  Apr. 
  19,1909 
  

  

  May 
  27, 
  1908 
  

  

  sw. 
  

  

  Apr. 
  27, 
  1911 
  

  

  May 
  29, 
  1911 
  

  

  sw. 
  

  

  Apr.28,1911 
  

  

  May 
  26, 
  1904 
  

  

  sw. 
  

  

  Apr. 
  29, 
  1911 
  

  

  May 
  26, 
  1908.... 
  

  

  sw 
  

  

  Apr. 
  6, 
  1910 
  

  

  May 
  21, 
  1911 
  

  

  sw 
  

  

  Apr. 
  7, 
  1909 
  

  

  May 
  19, 
  1906 
  

  

  w. 
  

  

  Apr. 
  29, 
  1902 
  

  

  May 
  31, 
  1908 
  

  

  sw. 
  

  

  Apr. 
  30, 
  1911 
  . 
  . 
  

  

  May 
  24, 
  1910 
  

  

  sw. 
  

  

  Apr. 
  26,1905 
  

  

  May 
  28. 
  1911 
  

  

  sw. 
  

  

  Apr. 
  30, 
  1907 
  

  

  May 
  24, 
  1904 
  

  

  sw. 
  

  

  Apr. 
  15, 
  1910 
  

  

  May 
  11,1911 
  

  

  sw. 
  

  

  Apr. 
  21, 
  1905 
  

  

  May 
  24, 
  1902 
  

  

  sw. 
  

  

  Apr. 
  30, 
  1905.... 
  

  

  May 
  17, 
  1903 
  

  

  sw. 
  

  

  Apr. 
  6,1911 
  

  

  May 
  21, 
  1903 
  

  

  SW., 
  NW. 
  

  

  Apr.23,1902 
  

  

  May 
  22,1903 
  

  

  NW. 
  

  

  Apr. 
  28, 
  1902 
  

  

  May 
  12, 
  1908 
  

  

  sw. 
  

  

  

  

  

  Table 
  III. 
  — 
  Direction 
  of 
  wind 
  during 
  20 
  days 
  of 
  lowest 
  temperature 
  in 
  April 
  

   and 
  May, 
  1902-1911. 
  (From 
  records 
  of 
  the 
  United 
  States 
  Weather 
  Bureau 
  

   at 
  Boston, 
  Mass.) 
  

  

  Date. 
  

  

  Temper- 
  

   ature. 
  

  

  Direction 
  

   of 
  wind. 
  

  

  Date. 
  

  

  Temper- 
  

   ature. 
  

  

  Direction 
  

   of 
  wind. 
  

  

  Apr. 
  4,1908 
  

  

  °F. 
  

   35 
  

   35 
  

   36 
  

   37 
  

   38 
  

   38 
  

   38 
  

   39 
  

   39 
  

   39 
  

   39 
  

   39 
  

   40 
  

   40 
  

   40 
  

   40 
  

   40 
  

   40 
  

   41 
  

   41 
  

  

  NW. 
  

  

  W. 
  

  

  E. 
  

  

  NW. 
  

  

  N., 
  W. 
  

  

  N. 
  

  

  E. 
  

  

  N. 
  

  

  W. 
  

  

  W.,NW. 
  

  

  SE. 
  

  

  NE. 
  

  

  NE. 
  

  

  NW. 
  

  

  N. 
  

  

  NE. 
  

  

  W. 
  

  

  N. 
  

  

  N. 
  

  

  SE. 
  

  

  May 
  2,1903 
  

  

  °F. 
  

   44 
  

   44 
  

   45 
  

   46 
  

   47 
  

   47 
  

   47 
  

   47 
  

   47 
  

   48 
  

   49 
  

   49 
  

   49 
  

   49 
  

   49 
  

   49 
  

   50 
  

   50 
  

   50 
  

   50 
  

  

  E., 
  SE. 
  

  

  Apr. 
  2,1911 
  

  

  May 
  3, 
  1907 
  

  

  E. 
  

  

  Apr. 
  7, 
  1907 
  

  

  May 
  1, 
  1909 
  

  

  NE. 
  

  

  Apr. 
  5, 
  1903 
  

  

  May 
  7, 
  1908 
  . 
  

  

  E. 
  

  

  Apr. 
  20, 
  1904 
  

  

  May 
  3, 
  1903 
  

  

  E. 
  

  

  Apr. 
  2,1906 
  

  

  May 
  17, 
  1905 
  

  

  NE. 
  

  

  Apr. 
  8,1907 
  

  

  May 
  22, 
  1909 
  

  

  NE. 
  

  

  Apr. 
  9, 
  1907... 
  

  

  May 
  5, 
  1910 
  

  

  N. 
  

  

  Apr. 
  10, 
  1910 
  

  

  May 
  3, 
  1911 
  

  

  W. 
  

  

  Apr. 
  3, 
  1908 
  

  

  May 
  28, 
  1906 
  

  

  NE. 
  

  

  Apr. 
  4, 
  1911... 
  

  

  May 
  2, 
  1907 
  

  

  NE. 
  

  

  Apr. 
  23, 
  1911 
  

  

  May 
  4,1907 
  

  

  SE. 
  

  

  Apr. 
  16,1903 
  

  

  May 
  7, 
  1907 
  

  

  E. 
  

  

  Apr. 
  16, 
  1904 
  

  

  May 
  27, 
  1907 
  

  

  E. 
  

  

  Apr. 
  2,1907 
  

  

  May 
  8, 
  1908 
  

  

  NE. 
  ' 
  

  

  Apr. 
  30, 
  1909... 
  

  

  Mav 
  4,1910 
  

  

  NE. 
  

  

  Apr. 
  1., 
  1911... 
  

  

  May 
  3, 
  1902 
  

  

  •NE. 
  

  

  Apr. 
  9, 
  1911... 
  

  

  May 
  15, 
  1904 
  

  

  NE. 
  

  

  Apr. 
  10, 
  1902 
  

  

  May 
  16, 
  1905 
  

  

  N., 
  NE. 
  

  

  Apr. 
  9, 
  1906 
  

  

  May 
  11, 
  1906 
  

  

  W. 
  

  

  

  

  

  A 
  glance 
  at 
  these 
  tables 
  indicates 
  that 
  in 
  April, 
  when 
  the 
  tempera- 
  

   ture 
  ranged 
  above 
  70°, 
  16 
  days 
  out 
  of 
  20 
  the 
  wind 
  varied 
  between 
  

   south 
  and 
  west. 
  For 
  the 
  same 
  month 
  during 
  the 
  Ioav 
  temperatures 
  

   the 
  wind 
  ranged 
  between 
  north 
  and 
  east 
  for 
  10 
  days 
  out 
  of 
  the 
  20. 
  

   Corresponding 
  figures 
  during 
  May 
  show 
  that 
  for 
  18 
  days 
  out 
  of 
  20 
  

   the 
  wind 
  was 
  from 
  the 
  south 
  and 
  west, 
  and 
  for 
  16 
  days 
  out. 
  of 
  20 
  

  

  