104 
MAGNETIC OBSERVATIONS, 
OBSERVATIONS—Continued. 
Station, Camp 72. Date, November 28, 1853. 
OBSERVATIONS ON POLARIS. 
Face of circle. 
Whether observations arc 
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. 
r 
West__ 
r 
East... 
Direct_ 
h. m. s. 
1 48 02. 1 
1 49 13.9 
O ' 
12 00 
12 00 
O ' 
54 50 
O ! // 
12 54 50 
Direct_ 
Reflection__ 
Reflection .. 
Reflection_ 
Reflection -. 
Direct_ 
1 51 21.9 
1 52 05.5 
12 23 
12 24 
53 27 
13 16 57 
Direct__ 
Reading of azimuth circle when plane of instrument is in the true meridian, by mean of four observations 
13 05 53 
Error of chronometer -f- 2 li. 42 m. 46s. 
Station, Camp 73. Date, November 29, 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. 
f 
West. -{ 
[ 
East. -{ 
Direct_ 
h. m. s. 
1 23 16.3 
1 24 39.9 
O ' 
82 05 
82 05 
o ' /' 
1 05 08 
o t H 
83 10 
Direct_ 
Reflection_ 
Reflection_ 
Reflection_ 
Reflection_ 
Direct_ 
1 27 1 3. 1 82 30 
1 03 35 
83 34 35 
Direct__ 
1 28 53. 2 
82 32 
Reading of azimuth circle when plane of instrument is in the true meridian, by mean of four observations 
83 22 21 
Error of chronometer -f- 2 h. 44 m. 11. 01s. 
