﻿OF 
  TERRESTRIAL 
  MAGNETISM 
  AT 
  SEVERAL 
  PLACES, 
  ETC. 
  455 
  

  

  TABLE 
  No. 
  XII. 
  

  

  

  

  

  

  Observations 
  at 
  Newport, 
  R. 
  

  

  J. 
  — 
  Second 
  Series 
  

  

  

  •Q 
  

  

  

  ti 
  

  

  

  

  u 
  

  

  S3 
  

  

  

  

  

  1 
  

  

  3 
  

   a. 
  

  

  o 
  

  

  a 
  . 
  

  

  O 
  id 
  

   7* 
  QJ 
  

  

  > 
  

   u 
  

  

  0) 
  

   S3 
  

  

  o 
  

  

  o 
  

  

  o.S 
  

  

  •_ 
  = 
  

  

  3 
  C 
  

  

  3 
  

   Id 
  

  

  P. 
  

  

  s 
  

  

  O 
  

  

  > 
  

  

  ^ 
  C 
  

  

  £ 
  a 
  c 
  

   E-< 
  

  

  

  Weather, 
  Wind, 
  &c. 
  

  

  Observers, 
  &c. 
  

   Place 
  of 
  Observation. 
  

  

  "o 
  

   d 
  

  

  

  o 
  *^ 
  

   a) 
  

  

  Q 
  

  

  £ 
  "So 
  

  

  — 
  . 
  

   pq 
  

  

  11 
  

  

  

   6 
  

  

  -> 
  

  

  . 
  

   0*3 
  

  

  

  

  Fah.° 
  

  

  Sees. 
  

  

  Sees. 
  

  

  

  

  1835. 
  

  

  

  

  

  

  

  

  

  1 
  

  

  A 
  

  

  Aug. 
  

  

  19 
  

  

  A.M. 
  10.1 
  

  

  86.2 
  

  

  350 
  

  

  38.14 
  

  

  38.07 
  

  

  Clear. 
  S. 
  W. 
  Cirrus. 
  

  

  Bache 
  and 
  Courtenay. 
  

  

  2 
  

  

  " 
  

  

  a 
  

  

  " 
  

  

  " 
  10.5 
  

  

  87.2 
  

  

  348 
  

  

  38.09 
  

  

  38.01 
  

  

  

  

  3 
  

  

  it 
  

  

  a 
  

  

  20 
  

  

  " 
  10.4 
  

  

  76.5 
  

  

  350 
  

  

  38.00 
  

  

  37.97 
  

  

  Clear. 
  Cloudless. 
  S. 
  E. 
  

  

  

  4 
  

  

  a 
  

  

  it 
  

  

  << 
  

  

  " 
  10.8 
  

  

  77.5 
  

  

  352 
  

  

  37.99 
  

  

  37.95 
  

  

  At 
  8 
  A. 
  M. 
  North. 
  

  

  In 
  the 
  Garden 
  in 
  rear 
  of 
  

  

  5 
  

  

  tt 
  

  

  a 
  

  

  2-1 
  

  

  " 
  10.7 
  

  

  74.7 
  

  

  350 
  

  

  38.03 
  

  

  38.01 
  

  

  Cloudless. 
  W. 
  S. 
  W. 
  

  

  Wm. 
  Littlefield, 
  Esq. 
  

  

  6 
  

  

  a 
  

  

  " 
  

  

  ti 
  

  

  " 
  11.3 
  

  

  76.0 
  

  

  300 
  

  

  38.00 
  

  

  37.97 
  

  

  

  corner 
  of 
  High 
  and! 
  

  

  7 
  

  

  « 
  

  

  it 
  

  

  25 
  

  

  " 
  10.1 
  

  

  75.2 
  

  

  300 
  

  

  38.06 
  

  

  38.03 
  

  

  Clear. 
  S. 
  W. 
  

  

  Mary 
  streets. 
  

  

  8 
  

  

  a 
  

  

  a 
  

  

  31 
  

  

  " 
  10.7 
  

  

  75.2 
  

  

  300 
  

  

  38.06 
  

  

  38.03 
  

  

  Overcast. 
  S 
  W. 
  

  

  

  9 
  

  

  a 
  

  

  it 
  

  

  tt 
  

  

  " 
  11.1 
  

  

  75.6 
  

  

  306 
  

  

  38.03 
  

  

  38.00 
  

  

  

  

  10 
  

  

  c 
  

  

  Aug. 
  

  

  25 
  

  

  A.M. 
  11.1 
  

  

  - 
  78.2 
  

  

  300 
  

  

  33.88 
  

  

  33.87 
  

  

  Clear. 
  S. 
  W. 
  

  

  Bache 
  and 
  Courtenay. 
  

  

  11 
  

  

  a 
  

  

  a 
  

  

  26 
  

  

  " 
  10.1 
  

  

  78.7 
  

  

  300 
  

  

  33.97 
  

  

  33.96 
  

  

  S. 
  W. 
  Clear. 
  

  

  

  12 
  

  

  a 
  

  

  tt 
  

  

  a 
  

  

  " 
  10.4 
  

  

  80.0 
  

  

  284 
  

  

  33.98 
  

  

  33.96 
  

  

  

  - 
  

  

  13 
  

  

  tt 
  

  

  a 
  

  

  27 
  

  

  " 
  9.7 
  

  

  73.6 
  

  

  300 
  

  

  33.93 
  

  

  33.93 
  

  

  Clear. 
  N. 
  W. 
  

  

  

  14 
  

  

  tt 
  

  

  it 
  

  

  tt 
  

  

  " 
  10.0 
  

  

  74.5 
  

  

  236 
  

  

  33.95 
  

  

  33.94 
  

  

  

  

  15 
  

  

  tt 
  

  

  tt 
  

  

  31 
  

  

  " 
  12.4 
  

  

  78.7 
  

  

  300 
  

  

  33.93 
  

  

  33.92 
  

  

  Overcast. 
  S. 
  W. 
  

  

  

  16 
  

  

  a 
  

  

  a 
  

  

  it 
  

  

  " 
  12.7 
  

  

  78.5 
  

  

  300 
  

  

  33.92 
  

  

  33.91 
  

  

  

  

  17 
  

  

  No 
  3 
  

  

  Aug. 
  

  

  25 
  

  

  A.M. 
  10.91 
  77.5 
  

  

  164 
  

  

  51.57 
  

  

  51.44 
  Light 
  haze. 
  S. 
  W. 
  

  

  Bache 
  and 
  Courtenay. 
  

  

  18 
  

  

  it 
  

  

  a 
  

  

  a 
  

  

  " 
  11.2 
  77.9 
  

  

  250 
  

  

  51.57 
  

  

  51.43 
  

  

  

  19 
  

  

  u 
  u 
  

  

  27 
  

  

  P.M. 
  5.6 
  71.5 
  

  

  250 
  

  

  51.51 
  

  

  51.48 
  {Clear. 
  N. 
  W. 
  

  

  

  20 
  

  

  it 
  tt 
  

  

  31 
  

  

  A.M. 
  12.0| 
  78.5 
  

  

  150 
  

  

  51.67 
  

  

  51.51, 
  Overcast. 
  S 
  W. 
  

  

  

  Mean 
  Time 
  of 
  Ten 
  Vibs. 
  at 
  70° 
  Fah. 
  by 
  A, 
  38.004 
  in 
  Semi-arcs 
  of 
  4° 
  to 
  2°. 
  Total 
  No. 
  of 
  Vibs. 
  2956. 
  

  

  it 
  

  

  " 
  " 
  C, 
  33.927 
  " 
  6° 
  to 
  2°. 
  

  

  " 
  " 
  2020. 
  

  

  tt 
  

  

  " 
  " 
  (B) 
  3, 
  51.465 
  " 
  " 
  

  

  " 
  " 
  814. 
  

  

  From 
  these 
  observations 
  are 
  deduced 
  the 
  following 
  relative 
  horizon- 
  

   tal 
  intensities, 
  the 
  same 
  element 
  as 
  Philadelphia 
  being 
  taken 
  as 
  unity. 
  

   From 
  Needle 
  A, 
  0.89996 
  

   " 
  " 
  C, 
  0.90000 
  

  

  " 
  " 
  3,0.90651 
  

  

  The 
  mean 
  of 
  these, 
  taken 
  according 
  to 
  principles 
  heretofore 
  stated, 
  

   gives 
  for 
  the 
  relative 
  horizontal 
  intensity, 
  h'" 
  = 
  0.90086. 
  

  

  INTENSITIES 
  AT 
  PROVIDENCE, 
  R. 
  I., 
  SPRINGFIELD, 
  MASS., 
  AND 
  

  

  ALBANY, 
  N. 
  Y. 
  

  

  For 
  the 
  horizontal 
  intensities 
  at 
  these 
  several 
  places, 
  we 
  rely 
  en- 
  

   tirety 
  upon 
  the 
  Second 
  Series 
  of 
  observations. 
  

  

  The 
  observations 
  at 
  Providence 
  were 
  made 
  on 
  a 
  visit 
  there 
  for 
  the 
  

   purpose 
  ; 
  and 
  the 
  kind 
  assistance 
  of 
  professor 
  Caswell, 
  of 
  Brown 
  Uni. 
  

   vol. 
  v 
  — 
  5 
  R 
  

  

  