﻿SOLAR 
  ECLIPSE 
  OF 
  NOVE31BER 
  30, 
  1834. 
  239 
  

  

  Observations 
  of 
  the 
  times 
  of 
  beginning 
  and 
  end 
  of 
  the 
  Eclipse 
  of 
  the 
  Sun, 
  11th 
  month 
  30th, 
  

   1834, 
  made 
  at 
  Haverford 
  School, 
  Latitude 
  40° 
  V 
  12" 
  North. 
  By 
  J. 
  Gummere, 
  Pro- 
  

   fessor 
  of 
  Natural 
  Philosophy 
  and 
  Mathematics. 
  

  

  h. 
  m. 
  sec. 
  

   Beginning, 
  59 
  12 
  

   End, 
  3 
  36 
  53 
  

  

  The 
  state 
  and 
  rate 
  of 
  the 
  clock 
  were 
  determined 
  by 
  a 
  number 
  of 
  

   observations 
  of 
  the 
  sun's 
  meridian 
  passage, 
  including 
  one 
  on 
  the 
  day 
  of 
  

   the 
  eclipse 
  : 
  the 
  state 
  of 
  the 
  transit 
  instrument, 
  a 
  twenty 
  inch 
  one 
  by 
  

   Dollond, 
  being 
  carefully 
  examined 
  by 
  observed 
  transits 
  of 
  high 
  and 
  

   low 
  stars. 
  The 
  observations 
  of 
  the 
  eclipse 
  were 
  made 
  with 
  a 
  forty-six 
  

   inch 
  achromatic 
  by 
  Tully 
  and 
  Sons, 
  just 
  received. 
  It 
  has 
  four 
  astron- 
  

   omical 
  eye 
  pieces, 
  but 
  was 
  not 
  accompanied 
  by 
  a 
  statement 
  of 
  their 
  

   powers, 
  and 
  I 
  have 
  not 
  yet 
  had 
  leisure 
  to 
  ascertain 
  them. 
  The 
  lowest 
  

   was 
  used; 
  it 
  is 
  probably 
  about 
  forty. 
  At 
  the 
  time 
  of 
  commencement 
  

   part, 
  of 
  a 
  small 
  cloud, 
  too 
  dense 
  to 
  admit 
  of 
  distinct 
  vision 
  through 
  it, 
  

   obscured 
  the 
  sun 
  for 
  a 
  few 
  seconds, 
  in 
  consequence 
  of 
  which 
  the 
  time 
  

   of 
  beginning, 
  as 
  given 
  above, 
  may 
  be 
  in 
  error 
  to 
  the 
  amount 
  of 
  three 
  

   or 
  four 
  seconds. 
  The 
  observation 
  of 
  the 
  end 
  was 
  free 
  from 
  obstruc- 
  

   tion, 
  and 
  is, 
  I 
  think, 
  accurate. 
  The 
  latitude 
  of 
  our 
  place 
  may 
  be 
  

   regarded 
  as 
  a 
  near 
  approximation. 
  I 
  have 
  not 
  yet 
  made 
  a 
  sufficient 
  

   number 
  of 
  observations 
  to 
  consider 
  it 
  accurately 
  determined. 
  

  

  Observations 
  on 
  the 
  Solar 
  Eclipse 
  of 
  November 
  SOth 
  1834, 
  made 
  at 
  West-Hills, 
  Long 
  

   Island. 
  By 
  F. 
  R. 
  Hassler, 
  Esq. 
  Communicated 
  by 
  Mr 
  John 
  A. 
  Dahlgren, 
  of 
  the 
  

  

  United 
  States 
  Navy. 
  

  

  By 
  direction 
  of 
  Mr 
  Hassler 
  the 
  following 
  observations 
  of 
  the 
  late 
  

   solar 
  eclipse, 
  made 
  by 
  him 
  at 
  West-Hills, 
  Long 
  Island, 
  30th 
  November 
  

   1834, 
  are 
  communicated. 
  

  

  h. 
  m. 
  sec. 
  

   First 
  contact, 
  1 
  09 
  53.93 
  mean 
  time, 
  

   Last 
  contact, 
  3 
  45 
  18.65 
  mean 
  time, 
  

  

  