MAGNETIC OBSERVATIONS 
131 
OBSERVATIONS—Continued. 
Station , Camp 111. Date, February 1, 1854. 
OBSERVATIONS ON POLARIS. 
Face of circle. 
Whether observations are 
direct or by reflection. 
Time of observa¬ 
tion by chrono¬ 
meter No. 10. 
Reading of 
azimuth cir¬ 
cle. 
Computed azi¬ 
muth of Po¬ 
laris. 
Reading of azimuth 
circle when plane 
of instrument is in 
the true meridian. 
f 
West.. 
l 
r 
East.....-j 
l 
Direct_ 
h. m. s. 
9 03 00. 5 
9 05 26.5 
O ' 
77 17 
77 18 
o ' " 
1 43 04 
o ' " 
75 34 26 
Direct_ 
Reflection __ 
Reflection_ 
Reflection_ 
Reflection_ 
Direct_ 
9 07 44.5 
9 08 52. 9 
77 46 
77 46 
1 43 36 
76 02 24 
Direct_ 
Reading of azimuth circle when plane of instrument is in the true meridian, by mean of four observations 
75 48 25 
Error of chronometer -)- 3 h. 8 m. 21s. 
Station, Camp 112. Date, February 4, 1854. 
OBSERVATIONS ON POLARIS. 
Face of circle. 
Whether observations are 
direct or by reflection. 
Time of observa¬ 
tion by chro¬ 
nometer No. 10. 
Reading of 
azimuth cir¬ 
cle. 
Computed azi¬ 
muth of Po¬ 
laris. 
Reading of azimuth 
circle when plane 
of instrument is in 
the true meridian. 
r 
West.- 1 
East . . 
1 
Direct. . 
Direct - 
Reflection . . . 
h. m. s. 
7 58 50. 6 
8 00 17.5 
67 50 
67 52 
o ' " 
1 30 04 
O ' " 
66 20 56 
Reflection __ 
. 
Reflection... 
Reflection_ 
Direct_ 
7 55 12.5 
7 57 05.5 
68 17 
68 18 
1 29 11 
66 47 19 
Direct_ 
Reading of azimuth circle when plane of instrument is in the true meridian, by mean of four observations. 
66 34 07 
Error of chronometer -f- 3/<. 09m. 8. 2s. 
