MAGNETIC OBSERVATIONS, 
93 
OBSERVATIONS—Continued. 
Station, Camp 64, Covera. Date, November 14, 1853. 
OBSERVATIONS ON POLARIS. 
Pace of circle. 
Whether observations are 
direct or by reflection. 
Time of observa¬ 
tion by chron¬ 
ometer 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 
i 
East-,--------{ 
i 
West...{ 
I 
Direct_ 
m. s. 
41 17 
43 09.5 
O ' // 
69 08 
69 09 
o ' " 
1 17 10 
o ' " 
70 25 40 
Direct_ 
Reflection_ 
Reflection_ 
• 
Reflection___ 
Reflection_ 
Direct_ 
45 50. 6 
47 24.5 
69 46 
69 48 30 
1 15 42 
71 02 57 
Direct_ 
Reading of azimuth circle when plane of instrument is in the true meridian, by mean of four observations. 
70 44 18 
Error of chronometer -f- 2 A. 35 m. 51. 5s. 
Station, Camp 65. Date, November 15, 1853. 
OBSERVATIONS ON POLARIS. 
Face of circle. 
Whether observations are 
direct or by reflection. 
Time of observa¬ 
tion by chron¬ 
ometer 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 . -1 
l 
East ... -j 
1 
Direct_-_ 
h. m. s. 
1 05 31.4 
1 07 20 .8 
O ' 
42 10 
42 10 
O ' ' 
1 09 08 
o ' " 
43 19 08 
Direct_ 
Direct_ 
1 00 00.9 
1 01 33.2 
42 30 
42 28 
i ii ii 
43 40 11 
Direct _ _ 
Reading of azimuth circle when plane of instrument is in the true meridian, by mean of four observations. 
43 29 39 
Error of chronometer -j- 2 h. 3 6m. 49s. 
