dien کا‎ 
MAGNETIC OBSERVATIONS. 
OBSERVATIONS Continued. 
119 
Station, Camp 84. Date, December 16, 1853. 
OBSERVATIONS ON POLARIS. 
| 
| 
Reading of pere حسم‎ azi- 
Face of circle. Whether observations are | Time of اس‎ eer of azimuth 
direct or by reflection. tion “b¥ c o- | az azimuth cir- uth of Po- | circle when murs 
nometer Nol 10. | cle. laris. of air rument isin 
| thetruemeridian. 
| LJ 
| 
h. m. D [e] 1 1 7 0 1 t 
Direct 3.12 52.9 12. 15 
Direct 3 13 48.0 12. 15 a 12 87 ا‎ 
West n a 
eflection ^ 
Reflection | 
| 
n iion | | 
East | یا‎ oe | 
Direc 8 08 44.6 | 31 | | 
| سیون‎ 5.10 20.9 | 12 33 | ۲ a SS 
| | | | 
Reading of azimuth circle when plane of instrument is in the true meridian, by mean of four observations| 12 45 18 
Error of chronometer 十 27. 51m. 27.255. 
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 — 
pi 
m. 8. 4 E o 7 ” 
Direct 2 57 06.5 51 03 
West | Direct 2 67 56.6 | 51 65 29 08 51 32 08 
) Reflection : ۱ 
L Reflection ! 
Reflection ! 
East f Reflection : 
! | Direct 2 59 13.5 51 0 1 58 1 
L| Direct 3 00 39.5 | 51 30 48 10 5 0 
Reading of le wh 1 f t the true meridian, by mean of four observations 51 45 09 
Error of chronometer + 2h. 52m. 26. Ts. 
