Determination of longitude, Novemoe 27, 1843—immersion of Fiviter’s 
449 
ENCAMPMENT AT THE SOUTH END OF TAIH PRAIRIE. 
hird sa tellife. 
ite ritiee is th aah aw 
ey 
Cimq 
Observed time. 
Mean time. 
h. min. sec. 
6 53 12 
h. min. sec. 
5 56 20 
| Longitude. 
| 
| 
Emersion of Jupiter's first satellite. 
Observed time. 
Mean time. Longitude. 
h. min. sec. h. min. sec. Deg. min, ‘sec. 
7 66.16 6 59 24.5 12i 02 43 
* - , Ps $ 
= 
ENCAMPMENT ON THE MAIN PRANGH. /OF FABL« a - 
re 
Determination of latitude, November 30; 1843—allitudes of xP olaris. 
OBSERVATIONS. 
; Double altitudes of Polaris. Time of chronometer. 
= Deg. min. see. “h.  min. ~ sec. 
91-86 80 eee eer et 
Qi. | By 48 49 23 
91 58 20 5109 
Index error = ++ 2 min. 5 iii 
RESULT OF CALCULATION. 
- True altitude. Mean time. Latitude 
6 53 35— 
