MAGNETIC OBSERVATIONS, 
113 
OBSERVATIONS—Continued. 
Station, Camp 78. Dale, December 5, 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. 
f 
West.-j 
f 
East. -j 
{ 
Direct_ 
h. m. s. 
2 17 59.5 
2 18 56.0 
O ' 
22 26 
22 27 
44 18 
o ' " 
23 10 48 
Direct __ 
Reflection_ 
Reflection_ 
Reflection __ 
Reflection _ _ _ „ __ 
Direct__ 
2 31 39.6 
2 32 41. 1 
23 03 
23 03 
38 16 
23 41 16 
Direct_ 
Reading of azimuth circle when plane of instrument is in the true meridian, by mean of four observations 
23 26 02 
Error of chronometer -|- 2 h. 47 m. 56.4s. 
Station, Camp 80. Date, December 7, 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___■{ 
l 
East.. -j 
1 • 
Direct_ 
h. m. s. 
2 44 46.5 
2 46 10. 6 
O ' 
37 11 
37 12 
t " 
32 57 
o ' " 
37 44 27 
! Direct_ 
Reflection_ 
Reflection.-.. 
Reflection.. 
Reflection___ 
Direct_ 
2 48 03. 1 
2 49 14.4 
37 40 
37 40 
36 11 
38 16 11 
Direct_ 
Reading of azimuth circle when plane of instrument is in the true meridian, by mean of four observations 
38 00 19 
Error of chronometer -f- 2 h. 49 m. 36. 5s. 
15 m 
