130 MAGNETIC OBSERVATIONS. 
OBSERVATIONS—Continued. 
Station, Camp 111, White Cliff Creek; latitude, 35° 08 0۳۰۲0 ; longitude Th. 34m. 4.64s. 
Needle, B. Date, February 1, 1854. Hour of beginning, 4h. 20m. p. m.; hour of ending, 4h. 45m. p. m. 
Observer, Lieut. J. C. Ives, Topographical Engineers. 
° ” 
61 02 
Needle vertical, face of circle north, reading of azimuth circle 61 05 
GE Td 
| 61 06 
Needle vertical, face of circle south, reading of azimuth circle 61.06 
61 06 
Reading of azimuth circle when plane of instrument is in the magnetic idi 61 06 00 
Reading of azimuth circle when plane of instrument is in the true meridian 15 48 25 
Approximate magnetic declinati 14 42 25 E. 
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 j| Def. from | Ther. | Def. towards Def. from | Def. towards; Def. from 
the vertical. | the vertical. | Fah. | the vertical. | the vertical. | the vertical. | the vertical. 
(1) (2) (1) (2) (1) (2) 
' ٥ d o , ° 1 ٥ , , ° , 
60 40 87 02 34 15 71 94 30 27 05 102 40 18 60 
Po gp iin: ES 60 40 87 05 EC TES 94 30 27 00 102 40 18 50 
60 40 87 02 Bt IM. ی سو‎ 94 25 27 03 102 40 18 58 
60 35 87 08 34 *329 وہ .| کے‎ 94 25 21. 00 102 15 18 58 
West 60 45 87 00 5E IB O 94 20 27 06 102 18 18 62 
60 87 05 84 15 71 94 25 27 00 102 15 18 55 
Qc, t» ° , ” o o , " o D " 
M (1) 87 03 40 | (y 94 25 50 (1) 102 28 00 } 
eans 60 39 1 ] (2) 34 17 30 j | 7 (2 27 02 10 (2) 18 57 10 
Corr. for index er- de, 
ror of needle...| 十 8 48 
Deduced inclina-| O ' " 
tion | 60 47 58 
9 " ۳ " D " 
Differences 52 46 10 . Ls 67 23 40 83 30 50 
Half diff. or angles o ۲ " o , " , " 
of deflection ۱ 26 23 05 دہ تا‎ 33 41 0 41 45 25 
o , "n o , " [o] , ” 
Sum of means - 76ء سے‎ 121 28 00 121 25 | 
: o , Wi o , ” o , " 
Half sum — dip Men š BN e A 60 44 00 60 42 35 
一 - DIU om 
