363. 
ST. VRAIN’S FORT. 
[ 174 ] 
Determination of time, July 23, 1843—altitudes of Arcturus. - 
OBSERVATIONS. 
FIRST SERIES. | 
| 
SECOND SERIES. 
_ Double altitudes of | Time of chronometer. Double altitudes of | Time of chronometer. 
Arcturus. | | Arcturus. 
_ Deg. min. sec. kh. min. sec. Deg. min. sec. min, sec. 
63 4&9 30 il 27 59... 60 18 20 ll 37. 4640 
6Sise.° BIH455:20. 20x 84 59 654. 00 39 
62 E 10 3¥ 16 569° 31 30 39. 37) 
GRELOVEL 20 - se 8606 59 12 * 25 40 27 
61 24° 40 34 : 
~” Index error — ++ 1 min. 30 sec. 
: RESULT OF CALCULATION. 
Mean time. Advance: 
h. _ min. . sec. h. min. . sec. 
10 28 40 1 06 32.5 
_ 
Determination of time, July 24, 1843—altitudes of the sun. 
Site og seoy 2 oe tran PS yIas $: . OBSERVATIONS, Teeter iegyf oie att ra 
” FIRST SERIES. | é SECOND SERIES. 
j 
altitudes of the | Time of chronometer. |! Double altitudes of the | Time of chronometer. 
sun’s lower lim | sun’s lower limb. : 
min. see. h. min. see. | Deg. min. sec. h, min. see. 
“ar 29 50 8 28 16.4 | 54 42 50 8 31 26.0 
58 44 50 28 54.0 | oi OE Be 32 082 
54 00 20 2° 36.5 4° 86 OF. & 3234.0 
54 Bi 50 30 05.0 55 16 50 32 56.8 
64:29 26 30. 51.6 | 55-28 15 33. - 26.5 
. 
Index error = ++ 1 min. 30 sec. 
RESULT OF CALCULATION. 
Mean time A Advance. 
= ee h. min. — sec. ; 
Te eet l @. i686 
