a 
. | 615 | {'1747j 
| ENCAMPMENT ON THE RIO VIRGEN. 
Determination of longitude, May 6, 1844—altitudes of Arcturus. 
OBSERVATIONS. 
Double altitudes of Arcturus. Time of chronometer. 
Deg. min. sec. 2. h. min. — ec. 
oa: 2 6 6 : 23.0 
86 41 00 , 34 50.0 
87 10 = 00 ei BS 01.5 
< , ; 
: Index error — ++ 10 sec. 
*, RESULT OF CALCULATION. 
Mean time. i Retard Longitude. 
sina ill a * 
h min. sec. h. min. sec. 
15 1 12 30.5 \ opan® 
~~ Determination of latitude, May 6, 1844—altitudes of Polaris. 
: ; OBSERVATIONS. 
a —* “ Z ~ 
” 
Double altitudes of Polaris. Time of chronometer. 
a - min, sec. ek ee 
ef 41°90 - 6 °s4°* "so 
“oJ 15 * 56 12 
mos - 57s 
a ie | 59 4603 
i 70 39 10 & ta ee 
“70 380s («40 48 ba 
nom ts ak. 
= fF , mM 
10 -@ 10 0s 03 
70 35 55 oo 21 
