﻿36 
  

  

  THE 
  DISPERSION 
  OF 
  THE 
  GIPSY 
  MOTH. 
  

  

  Table 
  IV. 
  — 
  Temperature 
  and 
  direction 
  and 
  velocity 
  of 
  

   wind, 
  etc. 
  — 
  Continued. 
  

  

  NE-Jf 
  

  

  e 
  \s°f. 
  

  

  NW 
  

  

  5w 
  

   J/y. 
  

  

  FlG. 
  ."5. 
  — 
  Diagram 
  show- 
  

   ing 
  the 
  proportion 
  of 
  

   time 
  the 
  wind 
  blew 
  in 
  

   each 
  direction, 
  when 
  

   wind 
  spread 
  was 
  pos- 
  

   sible, 
  during 
  April 
  and 
  

   May 
  for 
  10 
  years, 
  

   1902-1911. 
  Records 
  

   from 
  Boston 
  office 
  of 
  

   Weather 
  Bureau. 
  (Orig- 
  

   inal.) 
  

  

  Date. 
  

  

  24 
  hours. 
  

  

  Temper- 
  

   ature. 
  

  

  Direction 
  

   of 
  wind. 
  

  

  Velocity 
  

   of 
  wind. 
  

  

  1911. 
  

  

  May 
  1 
  

  

  2 
  

  

  12 
  m. 
  to 
  6 
  p. 
  m 
  

  

  °F. 
  

   66 
  to 
  72 
  

   65 
  to 
  68 
  

   65 
  

  

  65 
  to 
  68 
  

   72 
  to 
  81 
  

  

  66 
  to 
  81 
  

  

  70 
  

  

  67 
  to 
  72 
  

   69 
  to 
  84 
  

   67 
  to 
  81 
  

   66 
  to 
  80 
  

  

  65 
  to 
  73 
  

   69 
  to 
  75 
  

  

  66 
  to 
  71 
  

  

  69 
  to 
  82 
  

  

  70 
  to 
  87 
  

   69 
  to 
  79 
  

  

  76 
  

   65 
  to 
  86 
  

  

  67 
  to 
  88 
  

  

  68 
  

  

  SW.. 
  

  

  W 
  

  

  SW 
  

  

  SE„ 
  

  

  W., 
  NW... 
  

  

  SW 
  

  

  SW 
  

  

  NW 
  

  

  SW 
  

  

  sw. 
  

  

  W.,NW... 
  

  

  SW 
  

  

  NW 
  

  

  SE..SW.. 
  

   w. 
  

  

  Miles 
  

   per 
  hour. 
  

   11 
  to 
  13 
  

  

  8 
  a. 
  m. 
  to 
  12 
  m 
  

  

  14 
  to 
  18 
  

  

  5 
  

  

  2 
  to 
  3 
  p. 
  m 
  

  

  10. 
  

  

  6 
  

  

  12 
  m. 
  to 
  6 
  p. 
  m 
  

  

  11 
  to 
  17. 
  

  

  7 
  

  

  9 
  a. 
  m. 
  to 
  4 
  p. 
  m 
  

  

  10 
  to 
  U. 
  

   10 
  to 
  17 
  

  

  8 
  

  

  12 
  m. 
  to 
  8 
  p. 
  m 
  

  

  9 
  

  

  1 
  to 
  2 
  p. 
  m 
  

  

  12. 
  

  

  10 
  

  

  7 
  a. 
  m. 
  to 
  4 
  p. 
  m 
  

  

  11 
  to 
  25 
  

  

  11 
  

  

  9 
  a. 
  m. 
  to 
  12 
  p. 
  m 
  

  

  11 
  to 
  25 
  

  

  12 
  

  

  12 
  p. 
  m. 
  to 
  8 
  p. 
  m 
  

  

  10 
  to 
  19 
  

  

  13 
  

  

  9 
  a. 
  m. 
  to 
  7 
  p. 
  m 
  

  

  13 
  to 
  18 
  

  

  15 
  

  

  10 
  a. 
  m. 
  to 
  6 
  p. 
  m 
  

  

  10 
  to 
  19 
  

  

  16 
  

  

  9 
  a. 
  m. 
  to 
  1 
  p. 
  m 
  

  

  10 
  to 
  15. 
  

  

  17 
  

  

  5 
  to 
  7 
  p. 
  m 
  

  

  10 
  to 
  11 
  

   10. 
  

  

  18 
  

  

  8 
  to 
  11 
  a. 
  m., 
  4 
  to 
  5 
  p. 
  m 
  

  

  12 
  m. 
  to 
  12 
  p. 
  m 
  

  

  21 
  

  

  sw 
  

  

  sw 
  

  

  NE 
  

  

  SW 
  

  

  SW 
  

  

  N... 
  

  

  11 
  to 
  14. 
  

   10 
  to 
  11. 
  

  

  10. 
  

  

  22 
  

   23 
  

  

  12 
  p. 
  m. 
  to 
  3 
  a.m.,5 
  to 
  7 
  

  

  a. 
  m., 
  10 
  p. 
  m. 
  to 
  12 
  p. 
  m. 
  

  

  12 
  p. 
  m. 
  to 
  1 
  a. 
  m 
  

  

  28 
  

   29 
  

  

  11 
  a.m. 
  to 
  12 
  p. 
  m 
  

  

  5 
  a. 
  m. 
  to 
  12 
  p. 
  m 
  

  

  10 
  to 
  14. 
  

   10 
  to 
  19. 
  

  

  30 
  

  

  

  10. 
  

  

  

  

  

  

  During 
  the 
  entire 
  period 
  covered 
  by 
  these 
  

   records 
  51 
  per 
  cent 
  of 
  the 
  days 
  when 
  spread 
  was 
  

   possible 
  the 
  wind 
  was 
  southwest. 
  Figure 
  3 
  

   shows 
  graphically 
  the 
  proportion 
  of 
  the 
  time 
  

   when 
  the 
  wind 
  blew 
  in 
  each 
  direction, 
  as 
  given 
  

   in 
  the 
  above 
  tables. 
  

  

  In 
  the 
  fall 
  of 
  1907 
  the 
  gipsy 
  moth 
  was 
  found 
  

   extensively 
  in 
  New 
  Hampshire, 
  especially 
  in 
  the 
  

   eastern 
  part, 
  and 
  as 
  a 
  small 
  strip 
  along 
  the 
  

   seacoast 
  in 
  Maine 
  was 
  also 
  infested, 
  Weather 
  

   Bureau 
  records 
  are 
  here 
  added, 
  which 
  have 
  been 
  

   secured 
  from 
  the 
  Concord, 
  N. 
  H., 
  and 
  Portland, 
  

   Me., 
  stations. 
  

  

  Table 
  V. 
  — 
  Temperature, 
  direction, 
  and 
  velocity 
  of 
  wind 
  

   on 
  dates 
  after 
  hatching 
  of 
  caterpillars, 
  1907-1911. 
  

  

  CONCORD, 
  N. 
  H. 
  

  

  Date. 
  

  

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

  

  Maximum 
  

   tempera- 
  

   ture. 
  

  

  Direction 
  

   of 
  wind. 
  

  

  Velocity 
  1 
  

   of 
  wind. 
  

  

  1907. 
  

   Apr. 
  23 
  

   29 
  

  

  12 
  to 
  4 
  

  

  °F. 
  

   65 
  

   66 
  

   74 
  

   66 
  

   79 
  

   81 
  

  

  79 
  

   68 
  

   80 
  

   73 
  

  

  SW., 
  SE.. 
  

   S 
  

  

  Miles 
  per 
  I 
  

   hour. 
  

   10 
  to 
  13 
  ■ 
  

  

  2 
  to5 
  

  

  10 
  to 
  11 
  f 
  

  

  30 
  

  

  8 
  to 
  7... 
  

  

  sw.,s.... 
  

  

  NW 
  

  

  SW 
  

  

  SE 
  

  

  NW 
  

  

  SE 
  

  

  SW., 
  W 
  ... 
  

   SE 
  

  

  12 
  to 
  20 
  9 
  

  

  May 
  10 
  

   13 
  

  

  9to7 
  

  

  10 
  to 
  16 
  ■ 
  

  

  7to9 
  

  

  11 
  to 
  16 
  I 
  

  

  14 
  

  

  12 
  to 
  5 
  

  

  10 
  to 
  14 
  f 
  

  

  1908. 
  

   Apr. 
  23 
  

   25 
  

  

  12 
  to 
  3, 
  5 
  to 
  6 
  

  

  w 
  to 
  14 
  tr- 
  

  

  11 
  to 
  7 
  

  

  io 
  to 
  13 
  ■ 
  

  

  26 
  

  

  9 
  to 
  5 
  

  

  10 
  to 
  19 
  M 
  

  

  27 
  

  

  10 
  to 
  5 
  

  

  11 
  to 
  14 
  I 
  

  

  