﻿OF 
  SEVERAL. 
  PLACES 
  IN 
  THE 
  UNITED 
  STATES. 
  345 
  

  

  first 
  of 
  the 
  annexed 
  tables, 
  in 
  order 
  that 
  an 
  opinion 
  may 
  be 
  formed 
  as 
  

   to 
  the 
  accuracy 
  of 
  the 
  observations. 
  It 
  will 
  be 
  seen 
  that 
  in 
  no 
  case 
  

   does 
  the 
  time 
  of 
  conjunction 
  deduced 
  from 
  the 
  beginning 
  or 
  end 
  differ 
  

   from 
  the 
  mean 
  of 
  the 
  two 
  results 
  by 
  a 
  quantity 
  greater 
  than 
  3". 
  14. 
  

   In 
  the 
  second 
  table 
  are 
  given 
  the 
  results 
  obtained 
  by 
  neglecting 
  the 
  

   correction 
  for 
  irradiation 
  and 
  inflexion. 
  The 
  contents 
  of 
  these 
  tables 
  

   will 
  be 
  readily 
  understood 
  without 
  further 
  explanation. 
  

  

  In 
  calculating 
  the 
  time 
  of 
  conjunction 
  for 
  Philadelphia, 
  I 
  have 
  

   employed 
  the 
  data 
  furnished 
  by 
  my 
  own 
  observations, 
  but 
  as 
  they 
  are 
  

   perhaps 
  less 
  worthy 
  of 
  confidence 
  than 
  those 
  obtained 
  by 
  other 
  obser- 
  

   vers 
  in 
  the 
  city, 
  it 
  is 
  proper 
  to 
  remark 
  that 
  a 
  mean 
  of 
  all 
  the 
  results 
  

   furnished 
  by 
  the 
  committee 
  appointed 
  to 
  collect 
  observations 
  makes 
  the 
  

   time 
  of 
  commencement 
  at 
  Philadelphia 
  (State 
  House), 
  1 
  h. 
  m. 
  15.1 
  s., 
  

   and 
  that 
  of 
  termination 
  3h. 
  37 
  m. 
  49.5 
  s. 
  

  

  The 
  longitude 
  of 
  the 
  State 
  House, 
  west 
  of 
  Greenwich, 
  was 
  assume 
  

   equal 
  to 
  5 
  h. 
  m. 
  43.7 
  s., 
  in 
  estimating 
  the 
  positions 
  of 
  the 
  several 
  places 
  

   with 
  reference 
  to 
  this 
  latter 
  meridian. 
  

  

  At 
  most 
  of 
  the 
  stations 
  where 
  observations 
  were 
  made, 
  the 
  weather 
  

   is 
  described 
  as 
  having 
  been 
  decidedly 
  favourable 
  ; 
  and 
  although 
  the 
  in- 
  

   strumental 
  means 
  at 
  the 
  disposal 
  of 
  the 
  several 
  observers 
  were 
  probably 
  

   of 
  very 
  different 
  powers, 
  yet 
  the 
  observations, 
  almost 
  without 
  exception, 
  

   are 
  represented 
  to 
  have 
  been 
  satisfactory. 
  At 
  Philadelphia, 
  the 
  time 
  

   of 
  commencement 
  may 
  probably 
  be 
  relied 
  on 
  with 
  more 
  certainty 
  

   than 
  that 
  of 
  termination, 
  as 
  the 
  latter 
  was 
  rendered 
  somewhat 
  uncertain 
  

   by 
  the 
  interposition 
  of 
  thin 
  fleecy 
  clouds. 
  

  

  The 
  longitude 
  of 
  the 
  several 
  places 
  (with 
  the 
  single 
  exception 
  of 
  

   Cincinnati), 
  as 
  deduced 
  from 
  these 
  observations, 
  will 
  be 
  found 
  to 
  differ 
  

   but 
  slightly 
  from 
  those 
  given 
  in 
  the 
  American 
  Almanac, 
  as 
  the 
  results 
  

   of 
  the 
  best 
  observations 
  previously 
  made. 
  

  

  In 
  conclusion, 
  it 
  is 
  proper 
  to 
  remark 
  that 
  I 
  have 
  been 
  prevented 
  from 
  

   calculating 
  all 
  the 
  observations 
  furnished 
  to 
  the 
  Society, 
  only 
  by 
  the 
  

   want 
  of 
  sufficient 
  leisure 
  ; 
  and 
  that 
  those 
  omitted 
  have 
  not 
  been 
  neg- 
  

   lected 
  from 
  any 
  doubt 
  as 
  to 
  their 
  accuracy. 
  

  

  VOL. 
  V. 
  — 
  4 
  M 
  

  

  