rig): 418 
- ENCAMPMENT AT THE SOUTH END OF TAIH PRAIRIE. 
_ Determiniation of longitude, November 27, 1$43—altitudes of « Lyre. 
OBSERVATIONS. 
ay * 
_ FIRST SERIES. SECOND SERIES. 
Fe 
| = 
_ Dest fae of oa Time of chronometer. |. Double altitudes of | Time of chronometer. 
| e Lyre. : 
-/ = 
"Dee. min. ser. - h. min. — ste. : Deg. min. sec. h. min. sec. 
69 04° 10 j 8 10 3=648.0 | ORs -y Qipetes- 1 10 8 16 05.0 i 
ee eee db | fay OS 30 16 59.0 
68 18 300 3 07.6. | 86 46 -40 17 50.0 
30 fc eG ee ee a 18 45.0 
— ert a I Oe a I 
y Index error = ++ 2 min. 4 sec. 
= = RESULT OF CALCULATION. 
a Mean time. Advance. Lengitude. 
* ee, SSS 
he. min. sec. ‘ 
- Determination of latitude, Neher aT; (1843—allitudes of Polaris. 
OBSE RVATIONS. 
see oS FRE : ¥ 
le 
Double altitudes of Polaris. Time of chronometer. ~ 
* sec. h. min. “BCC. ny 
20 6 St = 251. a 
AT ’ 
— sf 
gegssssssen 
gsegesaser? 
esegegsse | 
