152 MAGNETIC OBSERVATIONS. 
OBSERVATIONS—Continued. 
Station, Camp 142, Soda Lake ; latitude 35° 03’ 13".20 ; longitude Th. 43m. 55. 06s. 
Needle, B. Date, March 8, 1854. Hour of beginning, 4h. 50m. p. m. ; hour of ending, 5h. 20m. p. m. 
Observer, Liew. J. C. Ives, Topographical Engineers. 
0 # "m | 
۱ 45 A0 1 
Needle vertical, face of circle north, reading of azimuth circle 45 40 
45 30 
45 20 
Needle vertical, face of circle south, reading of azimuth circle 45 45 
45 40 
Reading of azimuth circle when plane of instrument is in the ü idi 45 35 50 
Reading of azimuth circle when plane of instrument is in the ils meridian 59 26 49 
App 3 t g tic declination 18 80 AM 
OBSERVATIONS FOR MAGNETIC INCLINATION AND INTENSITY—No. 4. 
l š KS 
| Def. with wt. 23 gr. Def. with wt. 3 gr. 
| 
Face of circle. | Direct. i 
ef. towards | Def. from Ther. Def. toward Def. from Fah. 
the vertical. | the vertical. | Fahr. | the vertical. | the vertical. | Ther. 
1 (2) (1) 
` 
0 > o , 0 , ° [e] 1 [e] 1 O 
60 55 94 35 26 50 71 102 50 18 35 71 
East 60 60 94 42 Z5 58 ee cS 102 50 IB 38 [arepa 
60 58 94 43 26 88 دیون‎ 25 102 48 328۰۶8830 paon 
: f 60 58 94 5 BO SE 102 50 18 22 |...---.- 
West ois 60 59 94 45 285 00 |. 102 45 18 00: 
l 0 94 40 26 40 71 102 50 18 30 71 
0 , ” [e] , " o ° ? Hu ° : 
Means 60 58 00 | (1) 94 40 00 | (1) 102 48 50 
| (2) 26 46 20 ٠ (2) 18 31 20 xs 
سس یی ات‎ : 
Cor. for index error of needle... 十 8 48 
$ 0 7 " 
. + Deduced inclination. .......... 61 06 48 
۳ EE هن ات‎ EERE o ; # i o ۶ ee pis oe 
Differences. .............. AA eg 84 17 30 
OMIT I fs gy " Y 4e OUT سر می‎ 2200 001 T 
Half diff. or angles of deflection - $3 :56 50 06 US 42 08 45 i 
cre enee pe. À o ۴ " Áo TT $ 
Sum of means | 131948. AA 121 20 10 
