4 
- = wes (wt } 
x [ENT ON THE LEFT BANK OF THE SOUTH FORK OF PLATTE RIVER. 
* . 
Determination of longitude, July 4, 1842—altitude of the sun. 
t -™ 
OBSERVATIONS. wf 
FIRST SERIES. || SECOND SERIES, 
i. | bic’ 
Double altitude of the | Timevof chronometer. || Double altitude of the | ‘Time of chnoaometer, 
s lower limb. ee . sun’s lower limb, 
Deg. min. see. h. min. sec. Deg. min. see. h. min. sec. 
49 40 6 62 22 ee 6 05 
6 24 lo G6 5% 65 : 34. 00 G» 57 6&9 
f4 57 10 6 17 53 2) 40 6 58 35 
54 3) 50 6 63° WS 53 02 Ss 6 633 
St 59 6 56 10 44390 7 00 It 
x 2 ; iM ‘Ta - . , z os _ = 
"le a RESULT OF CALCULATION. : > 
Mean time. Advance. | | Long'tude. 
— a as 
* oe : 
" 4 sh ra 
base See ce. wie * 5 ?_ % 
z Sg : ; sik a4 ee i 
a? 
- 
axe = aoe Ein i 
he o 
ee Re - : 
oS 
$ 
