MAGNETIC OBSERVATIONS, 
147 
OBSERVATIONS—Continued. 
Station, Camp 135. Date, March 1, 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. 
r 
West. ■{ 
l 
r 
East.. i 
l 
Direct__ 
h. m. s. 
8 38 37. 9 
00 O 
^ .. 
o 
o ' " 
1 36 57 
o ' " 
7 03 03 
Direct.._. 
Reflection __ 
Reflection ___ 
Reflection... 
Reflection_ 
Direct_ 
.. 
Direct_ 
_ 
8 41 43.6 
« 
9 12 
1 37 37 
7 34 23 
Reading of azimuth circle when plane of instrument is in the true meridian, by mean of two observations- 
7 18 43 
Error of chronometer -j- 3 h. lira. 55. 2s. 
Station, Camp 137. Date, March 3, 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¬ 
laris. 
Reading of azimuth 
circle when plane of 
instrument is in the 
true meridian. 
1 i 
1 • 
l i 
« ■ 
1 1 
; : 
1 1 
1 1 
1 1 
1 1 
1 1 
1 1 
1 1 
1 1 
tf J 
ss 
Si. C3 
& W 
Direct_ 
h m. s. 
8 42 54.5 
O • 
66 35 
o / // 
1 37 53 
o / // 
64 57 07 
Direct__ _ 
Reflection._ 
Reflection._ 
Reflection.__ 
Reflection._ 
Direct_ 
Direct_ 
8 47 13.4 
67 04 
1 38 42 
65 25 18 
Reading of azimuth circle when plane of instrument is in the true meridian, by mean of two observations 
65 11 12 
Error of chronometer -f- 3 h. 19m. 53. 08s. 
