a 
\ . 2 
. 4 * 
‘ 537 2. 74 H 
* adie ii ON. ELK HEAD RIVER. ° 
; : ‘ 
Dettinintgan of tatiqude, June 10, 1844 ah cd of diner . 
Mt. OBS) VATIONS. 
Double altitudes of Polaris. Time of chronometer. 
= — ‘: ait 
Deg. min. sec ; h. min. sée 
79° 0% 30 a * - oT 
7° OR 4 594 
19° eaee” 40 7 of 3 
79. 03%" 00 oo. 2 
q. 04° «10 03 46 | 
79 04 §20. ot 58 
: 04 30 06 34 
9 04 50 08 05 
' OF ~ 96 09 is i 
79 05 10 35 
w > 
* Se Thermometer 57°. 
ae Index error — ++ 4 sec. >* 
>. * RESULT OF CALCULATION. ~ 
- “True altitude. | Mean time. _ Latitude. 
“Deg. min. sec. he ~min. - sec. Deg. min. see. 
oe * ee 50. . 59 i> & 
oP Correct this latitude on map. 
re 
~ SECOND. CAMPMENT ON ELK HEAD RIVER. : 
Determihiation of | latitude, June 11, ceria Polaris. 
Po 
’ Index error = 6 sec. cs 
a ad OF CALCULATION. : xe 
———- ae 
Pale Latiude. = ¢ « 
i 
