T174q 592 
ENCAMPMENT ON A ARY OF THE BIG VERMILLION aap 1,350 
FEET ABOVE ESTEE 1 LEVEL OF THE GULF OF MEXICO 
‘Determination of latitude, June 19, 1842—allitude sa Polaris. 
ty OBSERVATIONS. 
Double altitude of Polaris. ‘Time of chronometer. 
Deg. min. sec. kh. = min. see. 
7° 419 10 40 62 
76 21 60 10 44 51 
76 23 06 10 48 353 og 
76 24 40 10 53 06 
¥ 76 24 20° 10 55 47 
a ies 10... $8 eee 
oe 37 20 il 00. 25 
=e 27 50 * 11 01 49 
: 76 28 50 11 04 36 
: 76 29 50 11 06 52 
RESULT OF CALCULATION. 
= 2 
Ag 5 . a o% : ee i a : : 4 . 4 ‘a ad ne 
h. min. see ae. an sec. 
} Revd FP oat 39 30 40 
. 
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