﻿12 
  

  

  ON 
  THE 
  DIURNAL 
  VARIATION 
  

  

  TABLE 
  VII. 
  

  

  Hour. 
  

  

  12 
  M. 
  

  

  1 
  P.M. 
  

  

  2 
  P.M. 
  

  

  2| 
  P.M. 
  

  

  4 
  P.M. 
  

  

  5 
  P.M. 
  

  

  6 
  P.M. 
  

  

  7 
  P.M. 
  

  

  8 
  P.M. 
  

  

  9 
  P.M. 
  

  

  10 
  P.M. 
  

  

  11 
  P.M. 
  

  

  12 
  m. 
  

  

  N. 
  Pole 
  W. 
  

  

  Deg. 
  Min. 
  

  

  3 
  21.0 
  

  

  3 
  21.4 
  

  

  3 
  21.8 
  

  

  3 
  25.8 
  

  

  3 
  25.S 
  

  

  3 
  24.6 
  

  

  3 
  25.8 
  

  

  3 
  25.8 
  

  

  3 
  26.6 
  

  

  3 
  26.6 
  

  

  3 
  26.2 
  

  

  3 
  26.9 
  

  

  Temp. 
  

  

  Deg. 
  

   68§ 
  

  

  6H 
  

  

  71* 
  

  

  74 
  

   73| 
  

  

  6S 
  

   68 
  

  

  6S 
  

   68 
  

  

  6S 
  

  

  69 
  

  

  Remarks. 
  

  

  C 
  Sept. 
  4. 
  

   I 
  Gentle 
  rain. 
  

  

  CNot 
  raining. 
  

   i 
  Nimbus. 
  

  

  C 
  Sun 
  gleams 
  out. 
  

   J 
  Nimbus. 
  Cumu- 
  

   l 
  lus. 
  Wind 
  S.W. 
  

   ^Cumulus. 
  Cu- 
  

   l 
  mulo-stratus. 
  

  

  Cumulus, 
  

   f 
  Cumulus. 
  Sun 
  

   I 
  sets 
  in 
  clouds 
  

   r 
  Clear. 
  Cumulus 
  

   I 
  scattered. 
  

   C 
  Clear. 
  Fog 
  col- 
  

   l 
  lectingin 
  valley 
  

  

  { 
  

  

  Fog 
  in 
  valley. 
  

   Fog 
  dense. 
  

  

  Moon 
  obscured 
  

   Dense 
  fog. 
  Wind 
  

  

  hauling 
  to 
  W. 
  

   Fog 
  less 
  dense. 
  

  

  Wind 
  N. 
  of 
  W. 
  

  

  Hour. 
  

  

  12 
  m. 
  

  

  1 
  A.M. 
  

  

  8 
  A.M. 
  

  

  9 
  

  

  10 
  

  

  A.M. 
  

   A.M. 
  

  

  11 
  A.M. 
  

  

  12 
  M. 
  

  

  N. 
  Pole 
  W. 
  

  

  Deg. 
  Min. 
  

   3 
  26.9 
  

  

  3 
  26.2 
  

  

  3 
  24.9 
  

  

  3 
  20.3 
  

  

  3 
  22.2 
  

  

  3 
  24.3 
  

  

  3 
  24.6 
  

  

  Temp 
  

  

  Deg. 
  

   69 
  

  

  6S 
  

  

  62* 
  

  

  63 
  

   64 
  

  

  64*. 
  

  

  65*. 
  

  

  Remarks. 
  

  

  Sept. 
  5. 
  

   Fog 
  less 
  dense, 
  

   Wind 
  N. 
  of 
  W 
  

   "Needle 
  vibrating 
  

   slightly. 
  Fog 
  

   more 
  dense. 
  Air 
  

   almost 
  still. 
  

  

  Needlevibrating, 
  

   Cloudless. 
  Wind 
  

   [ 
  N. 
  W. 
  

  

  Clear 
  generally, 
  

   Cumulus. 
  

  

  Clear 
  generally. 
  

  

  Clear 
  generally. 
  

  

  Scattered 
  cumu 
  

   lus. 
  

  

  The 
  weather 
  was 
  very 
  unsettled 
  during 
  these 
  twenty-four 
  hours; 
  

   there 
  was 
  a 
  rain, 
  then 
  the 
  sky 
  cleared 
  ; 
  a 
  fog, 
  which 
  occupied 
  the 
  former 
  

   part 
  of 
  the 
  night, 
  was 
  dispersed 
  before 
  8 
  o'clock 
  in 
  the 
  evening. 
  The 
  

   wind, 
  at 
  first 
  S. 
  E., 
  shifted 
  to 
  S. 
  W., 
  gradually 
  drew 
  more 
  to 
  the 
  W. 
  

   and 
  N.j 
  and 
  finally 
  settled 
  at 
  N. 
  W. 
  The 
  thermometer 
  was 
  observed 
  

   on 
  the 
  outside 
  of 
  the 
  house. 
  The 
  curves 
  of 
  variation 
  and 
  temperature 
  

   are 
  traced 
  on 
  No. 
  7, 
  Plate 
  II.* 
  

  

  The 
  weather 
  now 
  became 
  settled, 
  and 
  the 
  observations 
  for 
  every 
  

   hour 
  are 
  given 
  in 
  the 
  following 
  table. 
  

  

  