142 
MAGNETIC OBSERVATIONS 
OBSERVATIONS—Continued. 
Station, Camp 128. Date, February 21, 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. 
West-.__ 
Direct_ 
h. m. s. 
9 50 57.5 
9 47 59.9 
O ' 
88 10 
88 39 
O * " 
1 45 56 
1 45 46 
O ' " 
86 24 04 
86 53 14 
Direct_ 
Reading of azimuth circle when plane of instrument is in the true meridian, by mean of two observations 
86 38 39 
Error of chronometer -f- 3 h. 14m. 4G. 6s. 
Station, Camp 130. Date, February 23, 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- 
laiis. 
Reading of azimuth 
circle when plane 
of instrument is in 
the true meridian. 
West... 
Direct_ 
h. m. s. 
8 10 58 
8 09 05.5 
O ' 
75 16 
75 46 
O ' " 
1 30 53 
1 30 25 
O ' " 
73 45 07 
74 15 35 
East___ 
Direct_ 
Reading of azimuth circle when plane of instrument is in the true meridian, by mean of two observations. 
74 00 21 
Error of chronometer 3h. 15 m. 53. 6s. 
Station, Camp 132. Date, February 25, 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. 
West_ 
Direct_ 
h. m. s. 
8 28 45.5 
O ' 
34 23 
o ' " 
1 35 04 
o ' " 
32 47 56 
East_ 
Direct_ 
8 26 30. 6 
34 54 
1 34 34 
33 19 26 
Reading of azimuth circle when plane of instrument is in the true meridian, by mean of two observations 
33 03 41 
Error of chronometer -f- 3 h. 1G?». 33. 5s. 
