587 [ 174 J 
& 
AS sty LOUIS—RESIDENCE OF COLONEL A 4 B. BRANT. ere 
Determination of latitude, May 27, 1842—altitude of Piliesis™ 
OBSERVATIONS. 
Double altitude of Polaris. Time of chronometer. 
Deg... min. ~ sec h. min. sec. 
74 38 20 4 30 27 
74 39 10 4 32 Al 
74 40 10 4 35 26 
Index error = — 20 sec. ae ee 
RESULT OF CALCULATION. 
True altitude. Mean time. Latitude. 
* = z Pee ae | we < 
~ Deg. min. see. : - min. sec. - Deg. min. sec. 
3S7 18 12 iG as 8; ~ 38 S87 24 
ENCAMPMENT AT CHOUTEAU’S LOWER TRADING HOUSE, RIGHT BANK OF 
“THE KANZAS RIVER, 700 FEET ABOVE THE LEVEL OF THE GULF OF 
MEXICO. 
[From this date, up to the 24th of August, the Brockbank pocket chronometer was used in not- 
ing time.] 
Determination of longitude, June 9, $5a=-cHiede a the sun. 
ise t. OBSERVATIONS. 
Se : ’ — 
FIRST SERIES. | SECOND SERIES. 
ai SUuEEEEEEEEEEEEITE 
Double altitude of the Time of icone Double altitude of the 
: sun’s lower limb. (Brockbank. )} sun’s lower limb. 
- min. see. | h. min. sec Deg. min. sec. 
ng 19 200gn%| 6 99 4 fk 91490. 
520654 =460+-| 6 30 360 51 02 20 
52 39 35 Gis 15.6 50 445) «650 
52 ; C2 the “50 ~~ 24 ~=«00 
52 02 50 | 6 32 51.0 50 10 00 
RESULT OF CALCULATION. 
Mean time. Advance. Longitude. 
h. min. see. h. min. sec. _ Deg. 
4 57 2 i wn z 9% 39 31 
