425 [174 } 
AT FORT BOISEE. — 
Determination of latitude, Oecd 10, 1843—altitudes of Polaris, (with 
tant.) 
OBSERVATIONS. — 
on eae 
: a 
Double altitudes of Polaris. Time of chronometer. : a 
Deg. min. ‘see. h.° min. © 8ée. < 
89 17 40 9 10 55 
89 18 30 12 07 
89 19 50 13 55 . ae 
“20 15 
+ - 89 22 20 17 22 
as - 23 10 18 28 
naa ~ 89 24 20 19 56 
89 25 30 22 14 
89 27 00 23 57 
89 27 50 25 15 
Index error = -++ 1 min. 30 sec. 
a : RESULT OF CALCULATION. 
True altitude. Mean time. Latitude. © 
Deg. min. sete. kh. min. see. Deg. min. sec. 
44 41 “09 8 ae 43 48 54 
Altitudes of dakota Spaces the circle,) October 10, 1843. 
> sf 
ae “ ee. ay or ie Re ee 
Deg. min. secs Se h. ‘min, set. 
a a 9 “he ee a 
179 - a7 40- eee. ag°) 42° 
s Bs 44 «BS 
, 36 OL ge 45 55 a 
. 4780 
538 28 00 49 13 
* 51 50 
713. 00-50 56... 05 
8 58 Fs “92 = = 
oe 177... 39... 20 Mae 
E | : 
Deg. i Bee. Shao 
4451 59 
Bs nde 9 eg, 19 a 19 we 
