MAGNETIC OBSERVATIONS, 
87 
OBSERVATIONS—Continued. 
Station, Camp 59, Albuquerque; latitude 35° 5' 50"; longitude Ih. 6m. 31.47s. 
Needle, B. Bate, October 21, 1853. Hour of beginning, ll/i. 30m. a. m.; hour of ending, 12 h. 30m. p. m. 
Observers, Lieut. A. IF. Whipple and Lieut. J. C. Ives, Topographical Engineers. 
o ' " 
t 38 16 
Needle vertical, face of circle north, reading of azimuth circle- ....-■< 38 22 
( 38 16 
1 38 35 
Needle vertical, face of circle south, reading of azimuth circle_._______ < 38 52 
( 38 52 
« .-• 
Reading of azimuth circle when plane of instrument is in the magnetic meridian___ 38 32 10 
Reading of azimuth circle when plane of instrument is in the true meridian ____ 51 54 51 
Approximate magnetic declination_____-_____ 13 22 41 E. 
OBSERVATIONS FOR MAGNETIC INCLINATION AND INTENSITY—No. 4. 
Face of circle. 
Direct. 
Def. with wt. 2 gr. 
Def. towards 
the vertical. 
( 1 ) 
Def. from 
the vertical. 
( 2 ) 
Tlier. 
Fah. 
Def. with wt. 3 gr. 
Def. towards 
the vertical 
( 1 ) 
Def. from 
the vertical. 
( 2 ) 
Ther. 
Fah. 
East. 
West... 
Means. 
Diiferences . 
Half diff. or angles of deflection. 
Sum of means . 
Half sum — dip 
o ' 
62 22 
62 20 
62 28 
62 10 
62 25 
62 17 
o ' 
87 62 
87 58 
87 65 
87 55 
87 65 
87 47 
62 20 20 
( 2 ) 
o ' 
36 22 
36 2 
36 15 
36 15 
36 25 
36 30 
o 
72 
74 
o ' 
102 17 
102 27 
102 25 
102 28 
102 20 
102 18 
o ' 
21 32 
21 23 
21 20 
21 50 
21 48 
21 51 
o 
73 
75 
36 18 30 
73 
(1) 102 22 30 
(2) 21 37 20 
74 
51 40 10 
80 45 10 
25 50 5 
40 22 35 
124 17 10 
123 59 50 
o / // 
62 8 35 
61 59 55 
