﻿OF 
  THE 
  HORIZONTAL 
  NEEDLE. 
  

  

  13 
  

  

  TABLE 
  VIII. 
  

  

  Hour. 
  

  

  N. 
  Pole 
  W. 
  

  

  Temp. 
  

  

  Remarks. 
  

  

  Hour. 
  

  

  N. 
  Pole 
  W. 
  

  

  Temp. 
  

  

  Remarks. 
  

  

  

  Deg 
  

  

  Min. 
  

  

  Deg. 
  

  

  

  

  Deg 
  

  

  Min. 
  

  

  Deg. 
  

  

  

  12 
  M. 
  

  

  O 
  

  

  O 
  

  

  24.6 
  

  

  65| 
  

  

  C 
  Sept. 
  5. 
  

  

  -2 
  Scattered 
  Cumu- 
  

  

  ( 
  lus. 
  WindN.W. 
  

  

  12 
  m. 
  

  

  3 
  

  

  34.9 
  

  

  54 
  

  

  ^ 
  Sept. 
  6. 
  

   1 
  Clear. 
  

  

  1 
  P.M. 
  

  

  3 
  

  

  25.5 
  

  

  66 
  

  

  Ditto. 
  

  

  1 
  A.M. 
  

  

  3 
  

  

  30.1 
  

  

  53 
  

  

  C 
  Clear. 
  Moon 
  (in 
  

   (_ 
  2d 
  quarter) 
  sets. 
  

  

  2 
  P.M. 
  

  

  3 
  

  

  25.8 
  

  

  66| 
  

  

  Ditto. 
  

  

  2 
  A.M. 
  

  

  3 
  

  

  31.7 
  

  

  52| 
  

  

  C 
  Cloudless.Therrn. 
  

  

  3 
  P.M. 
  

  

  3 
  

  

  25.8 
  

  

  671 
  

  

  Ditto. 
  

  

  3 
  A.M. 
  

  

  3 
  

  

  32.8 
  

  

  45| 
  

  

  < 
  in 
  inclosure 
  

   £ 
  with 
  needle 
  box. 
  

  

  4 
  P.M. 
  

  

  3 
  

  

  26.5 
  

  

  68 
  

  

  Ditto. 
  

  

  4 
  A.M. 
  

  

  3 
  

  

  32.8 
  

  

  44* 
  

  

  

  4§ 
  P.M. 
  

  

  3 
  

  

  26.2 
  

  

  67£ 
  

  

  Ditto. 
  

  

  5 
  A.M. 
  

  

  3 
  

  

  31.7 
  

  

  44 
  

  

  

  6 
  T 
  VP.M. 
  

  

  3 
  

  

  21.0 
  

  

  64 
  

  

  C 
  Wind 
  has 
  lulled. 
  

   i 
  Sun 
  behind 
  hill. 
  

  

  6 
  A.M. 
  

  

  3 
  

  

  30.5 
  

  

  471 
  

  

  

  7 
  P.M. 
  

  

  3 
  

  

  19.9 
  

  

  63s 
  

  

  

  7 
  A.M. 
  

  

  3 
  

  

  21.7 
  

  

  55 
  

  

  C 
  Therm, 
  removed 
  

  

  8 
  P.M. 
  

  

  3 
  

  

  25.8 
  

  

  60| 
  

  

  Cloudless. 
  

  

  8 
  A.M. 
  

  

  3 
  

  

  21.4 
  

  

  62 
  

  

  < 
  to 
  house, 
  where 
  

   £ 
  it 
  stood 
  at 
  59*. 
  

  

  SI 
  P.M. 
  

  

  

  

  

  

  8| 
  A.M. 
  

  

  3 
  

  

  22.2 
  

  

  

  

  9 
  P.M. 
  

  

  3 
  

  

  26.2 
  

  

  57 
  

  

  Cloudless. 
  

  

  9 
  A.M. 
  

  

  3 
  

  

  21.0 
  

  

  60| 
  

  

  C 
  Slight 
  haze 
  (stra- 
  

   l 
  tus). 
  

  

  10 
  P.M. 
  

  

  3 
  

  

  26.2 
  

  

  57 
  

  

  Cloudless. 
  

  

  10 
  A.M. 
  

  

  3 
  

  

  21.7 
  

  

  62 
  

  

  Ditto. 
  

  

  11 
  P.M. 
  

  

  3 
  

  

  32.1 
  

  

  55| 
  

  

  C 
  Scattered 
  cumu- 
  

   ? 
  lus 
  to 
  S. 
  

  

  11 
  A.M. 
  

  

  

  

  63 
  

  

  

  12 
  m. 
  

  

  3 
  

  

  34.9 
  

  

  54 
  

  

  Clear. 
  

  

  12 
  M. 
  

  

  3 
  

  

  22.2 
  

  

  64 
  

  

  C 
  Stratus. 
  Cumu- 
  

   l 
  lus. 
  Wind 
  W. 
  

  

  From 
  3 
  until 
  8 
  A.M. 
  the 
  thermometer 
  was 
  in 
  the 
  inclosure 
  with 
  

   the 
  needle. 
  On 
  its 
  removal 
  to 
  the 
  house, 
  it 
  fell 
  2^° 
  below 
  its 
  tem- 
  

   perature 
  at 
  the 
  former 
  station. 
  

  

  These 
  curves 
  are 
  given 
  in 
  No. 
  8, 
  Plate 
  II.* 
  

  

  The 
  afternoon 
  of 
  September 
  6th 
  was 
  clear, 
  with 
  occasional 
  cirrus 
  

   and 
  collecting 
  cumulus 
  ; 
  dew 
  was 
  deposited 
  immediately 
  at 
  sun 
  set, 
  

   and 
  a 
  dense 
  fog 
  occupied 
  a 
  part 
  of 
  the 
  morning 
  of 
  the 
  7th. 
  It 
  was 
  

   proposed 
  to 
  make 
  at 
  least 
  one 
  day's 
  observations 
  with 
  the 
  needle 
  

   exposed 
  to 
  the 
  direct 
  action 
  of 
  the 
  sun, 
  and 
  by 
  mistake 
  the 
  covering 
  

   was 
  removed 
  before 
  twelve 
  o'clock 
  on 
  the 
  7th, 
  as 
  will 
  be 
  seen 
  by 
  the 
  

   remark 
  in 
  the 
  subjoined 
  table. 
  The 
  curve 
  (No. 
  9, 
  Plate 
  III.*) 
  repre- 
  

   senting 
  the 
  observations 
  of 
  this 
  day, 
  terminates 
  at 
  the 
  observation 
  for 
  

   9i 
  A.M. 
  

  

  VOL. 
  V. 
  D 
  

  

  