previous   |   next

[Clark] 
 

       Sunday 18th    Clear morning    Took the me[ridian?] altitude of the Suns Lowr Limb with the Sextent    found it to be 56° 15' 22", The Chronomter too Slow about 24' 20"—    I also took the median altitude of the Suns Lowr limb with the quadt and found 52° 57m 0    the errour of the instrument is 1° 20' 00" + ad +

 

      

  Lat = 38° 21' 36 1/10"
Qudt = 38 31 57 1/10

 

        

Sexton  [1]

2 56 15 22    
  28   7 41    
      4 38   – refraction—
  28   7   3  [2]    
    16 18 9 Sun Diamtr +
  28 23 21 9  
        8    
  28 23 29 9 Suns Center
      8 49 0 Err of [enstr?=instrument?]
  28 14 40 9 True altitude
  90        
  61 45 19 1 N, reasonabl Distanc
  23 28 43   S, Suns Declination
  38 21 36 1/10  
  52° 57'   0"    
  26 28 30    
      38  
  26 27 52    
    16 18 9  
  1 20 8    
  28   4 18 9  
  90        
  61 55 41 1  
  23 23 [44?]    
  48 31 57 1/10  

 

        

decntl.

  52 57                  
    38                
  52 19                  
    16 18 9              
  52 35 19 9              
    6 20   8                
  58 55 27 9              
  90                    
2 37   4 32 1              
                     
  52 57   0  [3]                
  26 28 30                
    16 18 +              
  26 44 48               
      38              
    1 20 10                
  28   4 18                
                     
    12 37                
    12 19                
      18                
        6                
      24                

 

       I took the altitude of the Sun symbol L L with the Sext: the 18 Decr. and Calculated the Lattidude of River Dubois i. e.—

 

        

  38° 21' 36" 1/10  
also 19th and made it  
38 23   8   [Decl?] day
also 3d January 1804 do  
38 21 35    
also 4    do    do    do  
38 21   6 2/10  
  76 44 14 2/10  
  76 43 11 1/10  
Diffn  
  2   1   3 1/10  
  38 22 31 5/10 +
  38 21 35 7/10  
  38 22   7 2/10 True Lattidud  [4]




 

1. The following undated material is found with the December 18 entry and apparently represents calculations of latitude and longitude. Some of the arithmetic may be incorrect; smears and overwriting make parts difficult to transcribe. (Return to text.)

 

2. There may be a number before "28" (perhaps 6), but it does not figure in the calculations. (Return to text.)

 

3. These last two sets of figures are difficult to decipher because of overwriting. The arithmetic does not come out correctly as given here. (Return to text.)

 

4. The material from "I took" to "True Lattidud" is upside down on the obverse of document 1 of the Dubois Journal, and is placed here by the first given date. (Return to text.)












previous   |   next


Home  |  Search  |  Read the Journals  |  Additional Texts  |  Images  |  Maps  |  Multimedia
About This Project |  FAQ  |  Links  |  Print Editions  |  Copyright  |  Contact Us  |  Site Map