= 
* 
ENCAMPMENT ON THE NORTH FORK te THE PLATTE RIVER, MOUTH OF = 
au DEER Bas! 
Determination of longitude, July 26, 1842—altitude of the sun. 
OBSERVATIONS. 
Double altitude of the lower limb of the sun Time of chronometer. 
see. ail “eh min. — 8ét. 
416" af 45 721 . 03.0 
46° 31 40 21 45.5 
Interrupted by clouds. Interrupted by clouds. 
46". SEs: 38 7 14s 
a6% 2S 1 7 5. tn BEG 
< OF? 16 7 % 640 
44 37 30 P 7 27 00.0 
bs Se 
Thermometer 83°. 
RESULT OF CALCULATION. 
S Mean time. Advance. Longitude. 
lhe Ns PR h. min. sec. ‘ ~ Deg. min. sec. 
5 2 13 33 10648 
S| 
“Determination. of iehamneode, Judy 26, 1812 —altilude of 
Sa a Sa a onseavarions. 
FIRST SERIES.- SECOND SERIES. 
xX : F 
, Double altitude of | Time of chronometer. | Double altitude of | Time of chronometer. 
Deg. min. sec. | ih. min. s€c. = min. sec. |. kh. min. see. 
80 239 50 To Seen eee ee ee ee 
79 «660 )~— 10 eee « 7%. Gh. jel 41. 180 
7 a ae it 39. 20 78 82 30 li 2 
Thermometer 71°. s 
RESULT OF CALCULATION. 
Longitude. 
CS 
3 ? 
