xvi Astronomical and Meteorological Records, ^c. 



40" latitude 



Sept. 24, 1819. 



Sept. 24, 1819. 



Index error, 



deduced 

 Meridian double altitude of 



sun's lower limb 



Index error, — 40" latitude 

 deduced 



Magnetic azimuth of sun's cen- 

 tre, A. M. 

 Do. Do. P. M. id. alt. 



Time elapsed between obser- 

 vations 



Mao;netic variation deduced 



i 



41° 25' 05^" N. 

 96 00 20 



41° 25 00 N. 



S.85° 40' E. 

 S.59 30 W. 

 8" 34' 



12° 58' 48" E. 



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

 meter,) at noon. 



Error of Time- 



Sept. 24, 1819. 



Sept. 25, 1819. 

 Sept. 25, 1819. 



Time from Noon, 

 A. M. 



2,^ 57' 26" 

 3 55 55 

 3 54 23 J- 



Time from Noon, 

 P. M. 



3" 58' 20" ^ 

 3 56 49 [ 

 3 55 18i 3 



piece. 



8' 35" 30'" fast. 

 Mean time. 



Time from Noon, 

 A. M. 



3" 04' 50" 



Time from Noon, 

 P M. 



SI" 04' 25^' 



Error of Time- 

 piece. 



8' 15" 40'" fast. 



Meridian double altitude of 

 sun's lower limb 



Index error, — 40" latitude 

 deduced 



95° 13' 10" 



41 25 09 N. 



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

 nometer.) 



Sept. 26, 1819. 

 Sept. 26, 1819. 



Time from Noon, 

 A. M. 



31' 15' 15i 

 3 13 35i 

 3 11 56 



Time from Noon, I Error of Time- 

 P. M. I piece. 



q' 48i" "4 



2 09 I' 8' 05" 10'" 



30 jl Meantime. 



3"^ 13' 48i 

 3 1 

 3 1 



fast. 



Meridian double altitude of ? 



sun's lower limb - 5 



Index error, — 40" latitude \ 



deduced - - 3 



94<=' 26' 40" 



41 24 57 N. 



