116 MAGNETIC OBSERVATIONS. 
ORSERV ATIONS-— Continued. 
Station, Camp 81. Date, December 8, 1853. 
OBSERVATIONS ON POLARIS. 
Face of circle. Whether observations are ‘Time of observa- | Reading of | Computed azi- | Reading of azimuth 
direct or by reflection. by chro- | azimuth cir-| muth of Po-| circle when plane 
ی‎ No. 10. cle. laris. of instrument is in 
| the true meridian. 
À. m. 8. ° , 7 er o 1 “ 
( | Direct 2 06 40.3 53 00 
CS Direct 2 07 28.5 53 00 $6.8 59.308 
Reflection 
PE. 
f | Reflection - 
Reflection . 
Kr ae O Reet NU 48 56 64 15 58 
Direct 2 10 30.6 53 27 
Reading of azimuth circle when plane of instrument is in the true meridian, by mean of four observations 54 03 01 
Error of chronometer + 2h. 50m. 01.985. 
Station, Camp 108. Date, January 28, 1854. 
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 chro- | azimuth cir- muth of Po- سن‎ ee eem 
nometer No. 10. | cle. laris. of instrumentisin 
the A meridian. 
A m. o 1 0 " [e] ' "n 
( | Direct 6 28 22.7 75 27 
Direct 6 24 37.8 75 6 ik eR 
West ° 
Reflection we 
L Reflection 
Reflection 
Reflection ae 
East 
Direct 6 319 و‎ 75 43 
Direct 6 25 49.6 75 43 a s m 
74 35 6 
Reading of azimuth circle when plane of inst tisin the t idian, by mean of fi b ti 
Error of chronometer 十 3h. 6m. 47.5s. 
Nore.—For the remaining magnetic observations at Camp 108, see page 128. 
