[ 174] 
636 _ 
_ENCAMPMENT ON THE BIG BLUE RIVER. _ 
Determination of longitude, June 21, 1842—altitude of the sun. 
OBSERVATIONS, 
FIRST SERIES. 
| . 
SECOND SERIES- 
Weuble altitude of the | Time of chronometer. Double altitude of Bo Time of chronometer. 
fewer limb of the sun. | lower limb of the s 
: 5 | Se aa SY i 
Beg. min. sec. h. min. sec. | Deg, min. sec. h. min. see. 
“42 #09 40 6S @ 14.0 43 44 30 S 24 29:6 
42 36 40 6 Rt v7.0 438 58 00 8 25 03.3 
42 51 #10 8 22 04.5 44 12 45 8 25 44.3 
43 08 #40 8 22 54.0 44 29 10 S 2 270 
s 3 oe S°. 23° 40:6 44 46 8. Wo in 
Index error — — 42 sec. 
RESULT OF CALCULATION. 
Mean time * Advance, Longitude. 
ke min, see, kh. min. sec. Deg. min. > see. 
BS Ao cee + tle . ae Hct yee : 06. 58.. 
_ NOON HALT ON THE SWEET WATER RIVER, 
Determination of latitude, August 22, 1842—altitude of the sun in the 
: meridian. 5 
‘ - 4. 
TF Py H é hy f4 4 
- OBSERVATIONS. Sy 
vs { a $ as 
+2 : — : 2 
a ge T alti 60 ee: 
Double the sin’s | rue central altitude, sn eo Latitude. 
‘ 1 ; ee t i Ob 2G ag 
gai ex > #f P 
Dy: © f 4 ie 4 +4 a! 
Deg. minx, set, be sfc. 0 Deg. min. sec. 
1i8 08 05 19 10 42 26 16 
«Index error == — 40 seen 6) 
; * cad a5 ME t hye the be] ih r 
oe i 
te i ae & me oe ps Sata lg 
eee ee a ae : oe —. 
i $0... Gh-. 9 38 ab 
see — 
oa : COS Se Gi eeMeGee es. Tose nee ee ae 
