818 
a. ENCAMPMENT AT LAS VEGAS, @ ‘HE MARS 
Determination of longitude, May 3, 1844— altitudes of the sun. 
4 OBSERVATIONS. » 
FIRST SERIES. SECOND SERIES. 
(Doati altitudes of the | Time of chronometer. 
lim 
. || Double ra a the Time of chronometer. 
n’s lower | sun’slower limb. a 
Rides ae : - 
Deg. min. set he min. _ sec. Deg. min. see. h. min. see. 
56, 56° 45 oF des 04S 55 «34 0 13 31.0 
12 6.2 55.17... °80 16. 12,6 
56. 17 = 60 13 41.0 55 04 45 16 42.6 
56 03 «(00 14 18.5 54 49 40 17 21.0 
Go 48° 95 14 54.0 54... 33. 40 18 01.0 
wei Index error — +- 10 sec. : is 
' : 6 ad 
" . RESULT OF CALCULATION. 4 
Mean time. | Retard. 
h.. min. - see. MA: * min 
22 «58 fk — 07 
Determination of latitude, May 3, 19d "auld of Polaris. - : 
OBSERVATIONS." He. 
