﻿OF 
  THE 
  HORIZONTAL 
  NEEDLE. 
  5 
  

  

  house, 
  unless 
  when 
  specially 
  noted 
  to 
  give 
  the 
  temperature 
  of 
  the 
  

   needle 
  itself. 
  I 
  regretted 
  not 
  having 
  at 
  command 
  instruments 
  to 
  notice 
  

   both 
  these 
  points 
  at 
  the 
  same 
  time 
  ; 
  as 
  the 
  case 
  was, 
  I 
  endeavoured 
  to 
  

   vary 
  the 
  observations, 
  so 
  as 
  to 
  procure, 
  by 
  separate 
  observation, 
  the 
  

   same 
  results 
  as 
  far 
  as 
  practicable. 
  The 
  character 
  of 
  the 
  weather, 
  the 
  

   prevailing 
  clouds, 
  &c, 
  were 
  noted 
  in 
  the 
  column 
  of 
  remarks. 
  Ob- 
  

   servations 
  were 
  made 
  also 
  upon 
  the 
  barometer 
  and 
  dew 
  point, 
  which 
  

   I 
  may 
  make 
  the 
  subject 
  of 
  a 
  separate 
  communication 
  to 
  the 
  society. 
  

  

  In 
  the 
  table, 
  under 
  the 
  column 
  for 
  the 
  hour, 
  M. 
  is 
  used 
  to 
  signify 
  

   noon, 
  and 
  m. 
  midnight. 
  The 
  days 
  of 
  the 
  month 
  are 
  in 
  the 
  column 
  

   of 
  remarks. 
  

  

  TABLE 
  I. 
  

  

  Hour. 
  

   Mean 
  time. 
  

  

  Variation. 
  

  

  Differ- 
  

   ences. 
  

  

  Mean. 
  

   N. 
  Pole 
  W. 
  

  

  Temp. 
  

   Fah. 
  

  

  State 
  of 
  the 
  Weather 
  and 
  Remarks. 
  

  

  N. 
  F 
  

  

  ole 
  W. 
  

  

  S. 
  Pole 
  E. 
  

  

  

  Deg 
  

  

  . 
  Min. 
  

  

  Deg 
  

  

  . 
  Min. 
  

  

  

  Deg 
  

  

  . 
  Min. 
  

  

  Deg. 
  

  

  (Aug. 
  29th. 
  

  

  12 
  M. 
  

  

  3 
  

  

  29.6 
  

  

  3 
  

  

  25.7 
  

  

  3.9 
  

  

  3 
  

  

  27.6 
  

  

  74* 
  

  

  < 
  Cumulus. 
  Moon 
  near 
  first 
  

  

  1 
  P.M. 
  

  

  3 
  

  

  28.3 
  

  

  3 
  

  

  25.0 
  

  

  3.3 
  

  

  3 
  

  

  26.6 
  

  

  76| 
  

  

  £ 
  quarter. 
  

  

  2 
  P.M. 
  

  

  3 
  

  

  25.1 
  

  

  3 
  

  

  24.2 
  

  

  0.9 
  

  

  3 
  

  

  24.6 
  

  

  78 
  £ 
  

  

  

  3 
  P.M. 
  

  

  3 
  

  

  23.5 
  

  

  3 
  

  

  21.8 
  

  

  1.7 
  

  

  3 
  

  

  22.6 
  

  

  78J 
  

  

  Cumulus. 
  Clear 
  before 
  sun. 
  

  

  41 
  P.M. 
  

  

  3 
  

  

  22.6 
  

  

  3 
  

  

  21.8 
  

  

  0.8 
  

  

  3 
  

  

  22.2 
  

  

  

  C 
  Sun 
  striking 
  on 
  end 
  of 
  needle. 
  

   1 
  Further 
  covering 
  added. 
  

  

  5J 
  P.M. 
  

  

  3 
  

  

  21.8 
  

  

  3 
  

  

  21.0 
  

  

  0.8 
  

  

  3 
  

  

  21.4 
  

  

  76 
  

  

  

  6J 
  P.M. 
  

  

  3 
  

  

  20.2 
  

  

  3 
  

  

  17.3 
  

  

  2.9 
  

  

  3 
  

  

  18.7 
  

  

  

  Sun 
  sets 
  at 
  6 
  h. 
  33 
  m. 
  

  

  7 
  P.M. 
  

  

  3 
  

  

  20.2 
  

  

  3 
  

  

  17.3 
  

  

  2.9 
  

  

  3 
  

  

  18.7 
  

  

  74| 
  

  

  Clear. 
  

  

  8 
  P.M. 
  

  

  3 
  

  

  22.6 
  

  

  3 
  

  

  21.8 
  

  

  0.8 
  

  

  3 
  

  

  22.2 
  

  

  71 
  

  

  Clear. 
  

  

  9 
  P.M. 
  

  

  3 
  

  

  28.3 
  

  

  3 
  

  

  27.2 
  

  

  1.1 
  

  

  3 
  

  

  27.7 
  

  

  

  Clear. 
  

  

  10 
  P.M. 
  

  

  3 
  

  

  27.5 
  

  

  3 
  

  

  26.4 
  

  

  1.1 
  

  

  3 
  

  

  26.9 
  

  

  69| 
  

  

  Clear. 
  

  

  11 
  P.M. 
  

  

  O 
  

  

  27.5 
  

  

  3 
  

  

  26.4 
  

  

  1.1 
  

  

  3 
  

  

  26.9 
  

  

  68i 
  

  

  Clear. 
  

  

  12 
  m. 
  

  

  3 
  

  

  28.3 
  

  

  3 
  

  

  27.2 
  

  

  1.1 
  

  

  3 
  

  

  27.7 
  

  

  661 
  

  

  Clear. 
  

  

  1 
  A.M. 
  

  

  3 
  

  

  2S.3 
  

  

  3 
  

  

  27.2 
  

  

  1.1 
  

  

  3 
  

  

  27.7 
  

  

  66i 
  

  

  Clear. 
  Aug. 
  30th. 
  

  

  2 
  A.M. 
  

  

  3 
  

  

  26.7 
  

  

  3 
  

  

  25.7 
  

  

  1.0 
  

  

  3 
  

  

  26.2 
  

  

  

  C 
  Clear. 
  Needle 
  vibrating. 
  

   1 
  Observation 
  not 
  good. 
  

  

  3 
  A.M. 
  

  

  3 
  

  

  23.5 
  

  

  3 
  

  

  22.6 
  

  

  0.9 
  

  

  3 
  

  

  23.0 
  

  

  66§ 
  

  

  Hazy. 
  

  

  4 
  A.M. 
  

  

  3 
  

  

  21.0 
  

  

  3 
  

  

  20.3 
  

  

  0.7 
  

  

  3 
  

  

  20.6 
  

  

  66^ 
  

  

  Clear. 
  

  

  5 
  A.M. 
  

  

  3 
  

  

  21.0 
  

  

  3 
  

  

  20.3 
  

  

  0.7 
  

  

  3 
  

  

  20.6 
  

  

  66^ 
  

  

  Dense 
  fog. 
  

  

  5§ 
  A.M. 
  

  

  3 
  

  

  21.0 
  

  

  3 
  

  

  20.3 
  

  

  0.7 
  

  

  3 
  

  

  20.6 
  

  

  66$ 
  

  

  Dense 
  fog. 
  Time 
  of 
  sunrise. 
  

  

  6 
  A.M. 
  

  

  3 
  

  

  21.8 
  

  

  3 
  

  

  21.0 
  

  

  0.8 
  

  

  3 
  

  

  21.4 
  

  

  66 
  

  

  Fog 
  less 
  dense. 
  

  

  7i 
  A.M. 
  

  

  3 
  

  

  21.8 
  

  

  3 
  

  

  21.0 
  

  

  0.8 
  

  

  3 
  

  

  21.4 
  

  

  67i 
  

  

  Foggy. 
  

  

  8| 
  A.M. 
  

  

  3 
  

  

  20.2 
  

  

  3 
  

  

  19.6 
  

  

  0.6 
  

  

  3 
  

  

  19.9 
  

  

  

  Foggy- 
  

  

  9 
  A.M. 
  

  

  3 
  

  

  21.0 
  

  

  3 
  

  

  18.9 
  

  

  2.1 
  

  

  3 
  

  

  19.9 
  

  

  70| 
  

  

  Fog 
  clearing 
  off. 
  

  

  10 
  A.M. 
  

  

  3 
  

  

  25.9 
  

  

  3 
  

  

  24.2 
  

  

  1.7 
  

  

  3 
  

  

  25.0 
  

  

  72 
  

  

  Cumulus. 
  Sun 
  out. 
  Fog 
  gone. 
  

  

  11 
  A.M. 
  

  

  3 
  

  

  25.9 
  

  

  3 
  

  

  25.0 
  

  

  0.9 
  

  

  3 
  

  

  25.4 
  

  

  771 
  

  

  Cumulus. 
  

  

  12 
  M. 
  

  

  3 
  

  

  27.5 
  

  

  3 
  

  

  25.0 
  

  

  2.5 
  

  

  3 
  

  

  26.2 
  

  

  78| 
  

  

  Cumulus. 
  

  

  VOL. 
  V. 
  

  

  -li 
  

  

  