﻿114 
  REPORT 
  UNITED 
  STATES 
  ENTOMOLOGICAL 
  COMMISSION. 
  

   Table 
  II. 
  — 
  Average 
  monthly 
  temperature 
  for 
  1864 
  and 
  1866. 
  

  

  Months. 
  

  

  January 
  

  

  February 
  

  

  March 
  

  

  April 
  

  

  May 
  

  

  June 
  

  

  July 
  

  

  August 
  

  

  September 
  

  

  October 
  

  

  November 
  

  

  December 
  

  

  Annual 
  mean 
  . 
  

  

  Minnesota. 
  

  

  1864. 
  1866 
  

  

  11.4 
  

   22.5 
  

   27.0 
  

   41.9 
  

   60.8 
  

   66.9 
  

   72.3 
  

   70.7 
  

   62.2 
  

   45.0 
  

   30.0 
  

   11.3 
  

  

  43.58 
  

  

  11.5 
  

   9.3 
  

   19.1 
  

  

  42.8 
  

   56.8 
  

   65.2 
  

   74.8 
  

   65.5 
  

   55.5 
  

   47.9 
  

   33.6 
  

   17.0 
  

  

  Iowa. 
  

  

  1864. 
  

  

  17.0 
  

   26.6 
  

   32.6 
  

   45.7 
  

   61.3 
  

   72.0 
  

   75.5 
  

   72.1 
  

   63.7 
  

   46.5 
  

   33.1 
  

   17.5 
  

  

  41.58 
  

  

  47.05 
  

  

  17.8 
  

   18.1 
  

   28.2 
  

   49.6 
  

   58.3 
  

   67.6 
  

   76.4 
  

   67.4 
  

   57.2 
  

   51.4 
  

   38.0 
  

   22.2 
  

  

  Nebraska. 
  

  

  1864. 
  1866. 
  1864 
  

  

  46.01 
  

  

  17.4 
  

   31.2 
  

   34.0 
  

   45.8 
  

   63.4 
  

   74.3 
  

   77.5 
  

   74.6 
  

   66.9 
  

   45.7 
  

   33.7 
  

   19.9 
  

  

  20.6 
  

   24.5 
  

   29.5 
  

   51.4 
  

   60.7 
  

   68.3 
  

   78.4 
  

   72.6 
  

   58.4 
  

   51.8 
  

   40.7 
  

   24.6 
  

  

  48.7 
  

  

  48.46 
  

  

  25.1 
  

   39.6 
  

   40.0 
  

   51.3 
  

   65.4 
  

   76.9 
  

   83.6 
  

   80.2 
  

   73.3 
  

   50.5 
  

   37.8 
  

   28.1 
  

  

  54.31 
  

  

  27.7 
  

   30.2 
  

   38.7 
  

   56.4 
  

   73.1 
  

   70.0 
  

   77.2 
  

   73.6 
  

   61.5 
  

   55.8 
  

   42.4 
  

   29.8 
  

  

  Missouri. 
  

  

  1864. 
  1»66 
  

  

  53.03 
  

  

  o 
  

   24.4 
  

   36.7 
  

   40.8 
  

   50.6 
  

   66.6 
  

   75.5 
  

   80.2 
  

   74.1 
  

   68.3 
  

   49.7 
  

   39.8 
  

   24.5 
  

  

  52.6 
  

  

  29.5 
  

   30.2 
  

   39.7 
  

   58.6 
  

   62.6 
  

   71.9 
  

   79.4 
  

   73.0 
  

   61.6 
  

   56.0 
  

   44.8 
  

   32.4 
  

  

  53.31 
  

  

  From 
  this 
  table 
  we 
  see 
  that 
  the 
  average 
  temperature 
  of 
  1864 
  in 
  each 
  

   one 
  of 
  the 
  States 
  mentioned 
  except 
  Missouri, 
  was 
  slightly 
  in 
  excess 
  of 
  

   that 
  of 
  1866, 
  showing 
  that 
  the 
  former 
  year 
  was 
  somewhat 
  warmer 
  than 
  

   the 
  latter. 
  A 
  comparison 
  of 
  the 
  monthly 
  means, 
  brings 
  out 
  no 
  fact 
  that 
  

   would 
  have 
  a 
  tendency 
  to 
  change 
  the 
  bearing 
  of 
  the 
  annual 
  means 
  on 
  

   the 
  locust 
  question. 
  The 
  months 
  of 
  April, 
  October, 
  November 
  and 
  

   December 
  are 
  the 
  only 
  ones 
  in 
  which 
  the 
  temperature 
  of 
  1866 
  was 
  gen- 
  

   erally 
  higher 
  than 
  that 
  of 
  1864. 
  

  

  Do 
  the 
  records 
  of 
  the 
  rainfall 
  for 
  1866 
  over 
  the 
  entire 
  West 
  correspond 
  

   with 
  what 
  is 
  shown 
  in 
  our 
  first 
  table 
  % 
  In 
  order 
  to 
  test 
  this, 
  we 
  present 
  

   here 
  the 
  ratios 
  of 
  this 
  year 
  in 
  the 
  different 
  States 
  and 
  Territories 
  in 
  the 
  

   same 
  manner 
  as 
  neretofore 
  given 
  for 
  1864. 
  

  

  Texas, 
  1.34. 
  

   Tennessee, 
  .96. 
  

   Kentucky, 
  1.23, 
  1.09. 
  

   Ohio, 
  1.11, 
  1.18, 
  1.11. 
  

   Michigan, 
  1.05. 
  

   Indiana, 
  1.31, 
  .96, 
  1.33. 
  

   Illinois, 
  .88. 
  1.02, 
  1.13, 
  1.03, 
  .91. 
  

   Wisconsin, 
  1.19. 
  

  

  Iowa, 
  1.00, 
  1.08, 
  1.03, 
  1.45, 
  

   Missouri, 
  .99, 
  1.36, 
  1.22. 
  

   Kansas, 
  1.15, 
  1.52. 
  

   California, 
  1.36, 
  1.57, 
  1.57. 
  

   Utah, 
  1.60. 
  

   Montana, 
  1.30. 
  

   Nebraska, 
  1.03. 
  

   Minnesota, 
  1.00, 
  1.08, 
  .81. 
  

  

  .91. 
  

  

  Adding 
  those 
  ratios 
  together 
  and 
  dividing 
  by 
  the 
  number 
  of 
  stations 
  

   represented, 
  we 
  obtain 
  as 
  the 
  general 
  average 
  1.16, 
  showing 
  that 
  the 
  

   rain 
  precipitation 
  over 
  the 
  West 
  in 
  1866 
  was 
  about 
  16 
  per. 
  cent 
  more 
  

   than 
  the 
  average 
  annual 
  amount. 
  We 
  are 
  fully 
  aware 
  that 
  in 
  order 
  to 
  

   obtain 
  strictly 
  correct 
  results 
  on 
  which 
  to 
  base 
  calculations 
  as 
  to 
  the 
  ab- 
  

   solute 
  amount 
  of 
  rain 
  precipitation, 
  each 
  station 
  must 
  be 
  compared 
  

   only 
  with 
  itself 
  at 
  different 
  times 
  ; 
  but 
  the 
  method 
  here 
  adopted 
  does 
  

   give 
  a 
  correct 
  idea 
  of 
  the 
  character 
  of 
  the 
  year 
  in 
  reference 
  to 
  humidity 
  

   so 
  far 
  as 
  meterological 
  records 
  will 
  show 
  it. 
  In 
  fact, 
  we 
  can 
  obtain 
  a 
  

   general 
  idea 
  of 
  a 
  season 
  over 
  an 
  extended 
  area, 
  from 
  meterological 
  

   records, 
  in 
  no 
  other 
  way. 
  

  

  What 
  do 
  our 
  investigations 
  thus 
  far 
  show 
  in 
  reference 
  to 
  the 
  years 
  

  

  