Astronomical and Meteorological Records^ £s?c. xvii 



Equal altitudes of Sun to find error of Time-piece, (pocket chro- 

 nometer.) 



Sept. 27, 1819. 

 Sept. 9.7, 1819. 



Time from Noon, 



A. \r. 



3'' 35' 11' 

 3 33 35 

 3 32 00 



Time from Noon, 

 P. M.* 



3'' 32' 44i" 

 3 31 091 

 3 29 35 



I" 1 



Error of Time- 

 piece. 



7' 55" Hist. 

 Mean time. 



Meridian double altitude of 

 sun's lower limb 



Index error, — 40". Latitude 

 deduced 



93° 39' 20" 



41 25 08 N. 



Equal altitudes of Sun to find error of Time-piece, (pocket chro- 

 nometer. J 

 By large Sextant. 



Nov. 16, 1819. 



By small Sextant. 



Nov. 16, 1819. 



By Circle of Re- 

 flection. 



Nov. 16, 1819. 



Time from Noon, 

 A. M 



5^ 12' 53" 

 Lost. 



3 08 47 



Time from Noon, 

 A. M. 



5^ 02' 35i" 

 3 00 28i 

 2 58 204- 



Time from Noon, 

 A. M. 



2'' 45' 16" 

 2 42 58 

 2 40 4U 



Time from Noon, 

 P. M. 



2" 53 

 Lost 

 2 49 



3' 28" 1 

 9 23i J 



Time from Noon, 

 P. M. 



2" 43 

 2 41 

 2 38 



' 13" 1 

 04i [ 

 57i } 



Time from Noon, 

 P. M. 



2" 25' 511" ") 

 2 23 36A I 

 2 21 18 J 



Error of Time- 

 piece. 



9' 30^^ 12'^^slow. 

 Apparent time. 



Error of Time- 

 piece. 



9' 29" 40"' slow.. 

 Apparent time. 



Error of Time- 

 piece. 



9' 29" 44"' slow. 

 Apparent time. 



Error of Time-piece, by a mean of the preced- 

 ing observations. Apparent time 

 Do. Do. Mean time 



9' 29" 52'" slow. 

 5 35 00 fast. 



c 



