ip: ii Yo r: a I; one aa | ne eee eS: 
! = 
621 [ 174 ] 
BNCAMEMENT ON THE NORTH FORK OF PLATTE RIVER. * 
Determination of longitude July 29, sis eee * Agquilz. 
OBSERVATIONS. 
‘Double altitude of a Aquile. ‘Time of chronometer. 
3 Deg: min: see. h. min. - sec. 
e st 2 0 10, at 
“8204 50 10 49 11.0 
ciate, aces ae. ee a 
RESULT OF CALCULATION, 
Mean time. Advance. Longitude. 
2 "1 She 
h. min. sec. a he min. sees _ Deg. min. sec 
S <i Lie 
Determination of longitude, July 29, 1842—altitude of Arcturus. ° 
OBSERVATIONS. 
: Double altitude of Arcturus. 
1 M a 20 “ae eee mets ££ oo 
“4 : eae tr E 
Mean time. Advance. Longitude. 
kh. gman. 8€C: h. min. see. 
8 4l 30 2 15 °° 57 
a 
ee 
