MAGNETIC OBSERVATIONS 
142 
OBSERVATIONS— Continued. 
Station, Camp 128. Date, February 21, 1854. 
OBSERVATIONS ON POLARIS. 
Face of circle. Whether observations are | Time of observa- rarae sl 1 Computed azi- | Reading of aiana 
direct or by reflection. chro- muth cir muth of Po-| circle when plan 
nometer No. 10. | cle. juris of instrument is in 
the true meridian. 
À. 7A. 8. o , 0 A " o , 7 
West Direct 9 50 57.5 88 10 1 45 56 86 24 04 
East Direct 9 4T 59.9 88 39 1 45 46 .86 53 14 
Reading of azimuth circle when plane of instrument is in the true meridian, by mean of two observations 86 38 39 
Error of chronometer + 3h. 14m. 46. 6s. 
Station, Camp 130. Date, February 23, 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 chrono- | azimuth cir- uth of Po- circle when plane 
meter No. 10. cle. laiis. of instrumentisin 
the true meridian, 
| À. m. 8. o , [9] [4 " 0 r 7 
West Direct 8 10 658 75 16 1: 30 53 73 45 07 | 
| 
East | Direct 8 09 05.5 75 46 1 30 25 74 15 35 
le when plane of inst t tl , by mean of two observations. 74 00 21 | 
Reading of azimuth ci 
Error of chronometer + 3h. 15m. 53. 6s. 
Station, Camp 132. Date, February 25, 1854. 
OBSERVATIONS ON POLARIS. 
i: | 
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 
nometer No. 10. | cle. laris. of instrument is in 
the true meridian. 
h. m. t o à o [o] r " 
West | Direct 8 28 45.5 34 23 1 35 04 32 47 56 
East | Direct | "8 26 80.6 | 34 4 1 34 34 33 19 26 
Reading of azimuth circle when plane of instrument is in the true meridian, by mean of two observations 33 03 4l 
Error of chronometer + 3۸. 16m. 33. 5s. 
