MAGNETIC OBSERVATIONS. 
119 
OBSERVATIONS—Continued. 
Station, Camp 84. Date, December 16, 1853. 
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 . -{ 
East. 1 
1 
Direct_ 
h. m. s. 
3 12 52.9 
3 13 48.0 
o / 
12 15 
12 15 
! If 
47 
o / /' 
12 37 47 
Direct_ 
Reflection___ 
Reflection_ 
. 
Reflection._ 
Direct_ 
3 08 44. 6 
3 10 20.9 
12 31 
12 33 
20 49 
12 52 49 
Direct_ 
Reading of azimuth circle when plane of instrument is in the true meridian, by mean of four observations 12 45 18 
Error of chronometer -f- 2h. 51 m. 27.25s. 
Station, Camp 85. Date, December 17, 1853. 
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...<[ 
t 
r 
East. 
1 
l 
Direct__ 
h. m. s. 
2 57 06.5 
2 57 56. 6 
o / 
51 03 
51 03 
/ // 
29 08 
Oil' 
51 32 08 
Direct_ 
Reflection_ 
Reflection_ 
Reflection... 
Reflection_ 
Direct_ 
2 59 13.5 
3 00 39.5 
51 30 
51 30 
28 10 
51 58 10 
Direct_ 
Reading of azimuth circle when plane of instrument is in the true meridian, by mean of four observations 
51 45 09 
Error of chronometer -f- 2/«. 52 m. 26. 7s. 
