﻿OF 
  THE 
  HORIZONTAL 
  NEEDLE. 
  

  

  11 
  

  

  The 
  night 
  maximum 
  having 
  decidedly 
  passed 
  before 
  1 
  1 
  P.M., 
  the 
  

   observations 
  were 
  not 
  made 
  after 
  that 
  hour 
  during 
  the 
  night. 
  The 
  

   curves 
  of 
  variation 
  and 
  temperature 
  are 
  traced 
  on 
  No. 
  5, 
  Plate 
  II.* 
  

  

  TABLE 
  VI. 
  

  

  Hour. 
  

  

  N. 
  Pole 
  W. 
  

  

  Temp. 
  

  

  Remarks. 
  

  

  Hour. 
  

  

  N. 
  Pole 
  W. 
  

  

  T 
  mp. 
  

  

  Remarks. 
  

  

  

  Deg. 
  Min. 
  

  

  Deg. 
  

  

  

  

  Deg 
  

  

  . 
  Min. 
  

  

  Deg. 
  

  

  

  12 
  M. 
  

  

  3 
  22.6 
  

  

  65i 
  

  

  Sept. 
  3. 
  Raining. 
  

   C 
  Rain 
  ceased. 
  

  

  12 
  m. 
  

  

  3 
  

  

  30.1 
  

  

  60J 
  

  

  Sept. 
  4. 
  

   C 
  Raining 
  fast. 
  

  

  1 
  P.M. 
  

  

  3 
  23.0 
  

  

  65i 
  

  

  < 
  Rain 
  recom- 
  

   £ 
  menced. 
  

  

  1 
  A.M. 
  

  

  3 
  

  

  29.3 
  

  

  60S 
  

  

  < 
  Wind 
  draws 
  

   ^ 
  more 
  to 
  south. 
  

  

  2 
  P.M. 
  

  

  3 
  26.9 
  

  

  66 
  

  

  C 
  Not 
  raining. 
  

   1 
  Nimbus 
  high. 
  

  

  

  

  

  

  

  3| 
  P.M. 
  

  

  3 
  26.9 
  

  

  64§ 
  

  

  Not 
  raining. 
  

  

  

  

  

  

  

  5 
  P.M. 
  

  

  3 
  26.2 
  

  

  66 
  

  

  

  

  

  

  

  

  6 
  P.M. 
  

  

  3 
  21.9 
  

  

  65 
  

  

  

  

  

  

  

  

  6| 
  P.M. 
  

  

  3 
  23.4 
  

  

  65 
  

  

  

  

  

  

  

  

  7§ 
  P.M. 
  

  

  3 
  24.6 
  

  

  64 
  

  

  

  

  

  

  

  

  8 
  P.M. 
  

  

  

  

  

  8 
  A.M. 
  

  

  3 
  

  

  16.0 
  

  

  64| 
  

  

  Nimbus. 
  

  

  8| 
  P.M. 
  

  

  3 
  26.2 
  

  

  63 
  

  

  

  81 
  A.M. 
  

  

  

  

  

  

  9| 
  P.M. 
  

  

  3 
  24.6 
  

  

  63 
  

  

  

  9§ 
  A.M. 
  

  

  3 
  

  

  16.8 
  

  

  66£ 
  

  

  Drizzle. 
  

  

  10§ 
  P.M. 
  

  

  3 
  27.7 
  

  

  62 
  

  

  C 
  Slightrain. 
  Wind 
  

   i 
  S. 
  E. 
  

  

  10§ 
  A.M. 
  

  

  

  

  

  

  11 
  P.M. 
  

  

  

  

  

  11 
  A.M. 
  

  

  3 
  

  

  1S.3 
  

  

  67§ 
  

  

  Slight 
  rain. 
  

  

  

  

  

  

  

  

  

  

  

  r 
  Slight 
  rain. 
  

  

  12 
  m. 
  

  

  3 
  30.1 
  

  

  60| 
  

  

  

  12 
  M. 
  

  

  3 
  

  

  21.0 
  

  

  68£ 
  

  

  < 
  

  

  Clouds 
  lighter 
  

   than 
  at 
  last 
  ob- 
  

  

  

  

  

  

  

  

  

  

  

  servation. 
  

  

  This 
  table 
  will 
  be 
  found 
  interesting, 
  as 
  showing 
  the 
  effect 
  of 
  a 
  steady 
  

   rain 
  upon 
  the 
  variation. 
  The 
  maximum 
  being 
  passed 
  at 
  1 
  A.M., 
  the 
  

   observations 
  were 
  discontinued 
  until 
  8 
  in 
  the 
  morning. 
  The 
  results 
  

   are 
  traced 
  on 
  No. 
  6, 
  Plate 
  II.* 
  The 
  thermometer 
  was 
  not 
  in 
  the 
  

   needle 
  inclosure, 
  but 
  in 
  a 
  fair 
  exposure 
  on 
  the 
  outside 
  of 
  the 
  house. 
  

  

  