Determination of latitude, November 5, 1843—altitudes of Polaris. 
a 
& 
[ 174} 
MISSIONARY STATION AT THE DALLES OF THE COLUMBIA. 
OBSERVATIONS. 
Double altitudes of Polaris. Time of chronometer. | 
~ 
Dez. min. sec. ° kh. min. sec. 
93 53 00 9 26 3L 
93 54 20 @ 28 08 
93 54 15 29 3l 
93 54 20 30 33 
93 55 20 31 43 
93 55 20 32 37 
93 56 10 33 50 
93 56 25 34 51 
93 57 20 35 45 
93 57 30 36 5a“ 
ya Index error = —- 1 min. 22 sec. 
RESULT OF CALCULATION.. 
True altitude. Mean time. Latitude. 
Deg. min. sec. he. min. — see Deg. min: see. 
46 57 29 8 22 2 45 S- 3g 
Emersion of Jupiter’s second satellite. 
Observed time. 
x 
Longitude. 
h. = min. sec. 
10 43 32 
