MAGNETIC OBSERVATIONS。 123 
OBSERV ATIONS— Continued. 
Station, Camp 91, Leroux's Spring. Date, December 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 chro-| azimuth cir-| muth of Po-| circle when plane 
i nometer No. 10. cle. laris. of instrument is in 
e true meridi 
À. m 8 ٥ : Od ° POM 
Direct 3 04 40.2 100 55 
Reflection 
3 Reflection 
f Reflection 
| Fast 1 Reflection 
Direct et 4 101 23 
x L| Direct ومد یھ‎ 88 22 24 101 46 24 
Reading of azimuth circle when pl finst t is in thet idian, by mean of four observations 101 34 16 
` 
Error of chronometer 十 2À. 56m. 57.06s. 
Station, Camp 96. Date, January 9, 1854. 
š OBSERVATIONS ON POLARIS. 
۱ | š 
1 Face of circle. Whether observations are | Time of observa- ¡Reading of | Computed azi- | Reading of azimuth 
irect or by reflection. tion by chro- | azimuth cir- w sq of Po- circle when plane 
nometer No. 10. | cle. lar of instrument isin 
the true meridian 
A m. 8. , “ , ” ° 
; Direct 5 20 46.1 $ MM BE bl 48 31 59 
West. Direct 
Reflection 
Reflection 
Reflection 
East 
Direct 5 18 28.8 49 30 a. — 
Sealine fads icd ] f inst tisin thet idian, by mean of three observations 48 44 16 
Error of chronometer 十 3h. Om. 9. ۰ 
