u MAGNETIC OBSERVATIONS, 125 
OBSERV ATIONS— Continued. 
I Station, Camp 103, Pueblo Creek ; latitude 349 56' 31" ; longitude Th. 31m. 04.605. 
f Needle, B. Date, January 21, 1854. Hour of beginning, 3h. p. m. ; hour of ending, 3h. 40m. p.m. 
Observer, Lieut. J. C. Ives, Topographical Engineers. 
o , " 
H 17 .25 
Needle vertical, face of circle north, reading of azimuth circle 17 50 
CET 
j 17 28 
Needle vertical, face of circle south, reading of azimuth circle ۱ 17 44 
17 41 
Reading of azimuth circle when plane of instrument is in the magnetic meridian - 17 36 50 
Reading of azimuth circle when plane of instrument is in the true meridian 31 36 14 
Approximate magnetic declination 13 59 24E. 
OBSERVATIONS FOR MAGNETIC INCLINATION AND INTENSITY —No. 4. 
Def. with wt. 2 gr. Def. with wt. 23 gr. Def. with wt. 3 gr. 
Face of circle. Direct. 
Def. towards | Def. from the | Ther. | Def. towards | Def. from the | Def. towards - wm the 
the vertical. vertical. Fah. vertical. vertical. | the vertical. rtical. 
Q) (2) (1) (2) (1) 
° “ ° “ ° 1 o o 1 o , ° 7 ° t 
Í 61 05 87 40 34 40 45 94 12 27 28 102 07 19 15 
East 61 07 87 45 i oO مر‎ 94 30 27 20 102 25 19 10 
8 l 61 05 87 30 st An ac گا‎ 94 15 27 25 102 15 19 12 
| š 61 03 87 30 BAL 94 25 27 30 102 15 19 15 
۱ ۰ ۰ Subs eas 61 00 87 33 st UR ES 94 25 21 25 102 20 19 12 
61 05 87 40 34 40 45 94 20 27 20 102 17 19 10 
e Bed ° / "7 ° ° 1 H o , u 
1) 87 .36 20 (1) 94 21 10 (1) 102 16 30 
Moreh سس ات‎ en) | st a2 30 | | 9 | 12 2 مه‎ | (2) 19 12 20 
| Corr. for index er- TE 
ror of needle + 8 48 
Tee inclina- | 9 ' | 
ed. ہے‎ 61 12 58 
e] , “ ° , “ ° 7 “ 
Differences وق‎ "09. DO کک ام دا‎ 66 56 30 83 04 10 
Half diff. or les o x = o , " o " 7 
of "تھے‎ 206 26 56 ]---.-- 33.28 15 41 32 05 
i o , “ o , "n o D " 
ii Bun dm 122 18 50 ERE 121 45 50 121 28 50 
° , ” ° , " o D ” 
Half sum — dip 1 04 ` `` ...... 60 62 55 60 44 25 
