[ 174]. 362 
& ST, VRAIN’S FORT. 
Determination of latitude, July 23, 1843—altiludes of Polaris. 
OBSERVATIONS. 
Double altitudes of Polaris. Time of chronometer. 
sail 
Deg. min. see... min. sec. 
20 Il 04 
73 49 50 06 3t 
= 7 49 00 07 44 a 
79 51 30 10 
79 52 30 - 12 pal 
a ee . 16 67 
cae ee OD. Sp SE. SS 18 ‘06 
es 80 00 00 oe 20 4°40 
ae 80 Ol 50 mene 22 39 
80 02 25 24 00 
Index error = — 37 see, 
RESULT OF CALCULATION. 
‘Prue altitude. ~ Mean time. i Latitude, 
~ Deg. min. sec. h. min. see. Deg. min. see. = 
“35 66 09 10. 07. 44 40°17 WB 
~ | 
Determination of latitude, July 23, 1843—meridian altitude of« Aquilz, 
OBSERVATION. 
Double altitudes of a Aquile. True altitude. : - Latitude. — 
- a. 9c. Deg. min. sec. - min. sec. 
a 22 = =35 im TW 0 rs 16 33 
7 
