104 
MAGNETIC OBSERVATIONS. 
OBSERV ATIONS—Continued. 
Station, Camp 12. Date, November 28, 1853. 
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 isin 
the true meridian. 
A. 4 ra o d o , o 1 7 
í | Direct T 48 021 12 00 
SN Direc 1 49 13.9 12 00 Mi BA ۱2. مر سس‎ 
Reflection , 
Reflection . 
: Reflection . 
Fact 3 سید پچ‎ š : : š 
irect 51 21.9 2 238 
Direct 1 52 05.5 12 24 "V 18 19 . ۲ 
13 05 53 
Reading of azimuth circle when plane of instrument is in the true meridian, by mean of four observations 
Error of chronometer + 2h. 42m. 46s. 
Station, Camp 73. 
Date, November 29, 1853. 
OBSERVATIONS ON POLARIS. 
Face of circle. Whether observations are | Time of observa- | Reading of | Computed azi- | Reading of azimuth 
direct or by reflection. tion by chron- | azimuth cir-| muth of Po-| circle when plane 
ometer No. 10. | cl laris. of instrument is in 
the true meridian. 
Aan. Ws E Ee EE 
Direct 1-23 3 82 5 
0 Direct 1 24 39.9 82 05 1 05 08 83 10 08 
Reflection - - 
Reflection - 7 
Reflection - SS 
Reflection - => 
East 
Direct 1 2f 38.1 82 30 
Direct 1 28 53.2 82 32 l 0$ 5 83 34 35 
Reading of azimuth circle when pl f inst t is in thet idian, by mean of four observations| 83 22 21 
Error of chronometer + 2h. 44m. 11. 01s. 
