84 MAGNETIC OBSERVATIONS. 
OBSERVATIONS-— Continued. 
Station, Camp 59, Albuquerque ; latitude 359 05' 50"; longitude Th. 6m. 31. 473. 
Needle, A. Date, October 18, 1853. Hour of beginning, YA. 50m. p. m.; hour of ending, Zh. 35m. p. m. 
Observers, Lieut. A. W. Whipple and Lieut. J. C. Ives, Topographical Engineers. 
CT e ” 
38 51 
Needle vertical, face of circle north, reading of azimuth circle 38 21 
88 55 
38 55 
Needle vertical, face of eircle south, reading of azimuth circle 38 44 
38 23 
Reading of azimuth circle when plane of instrument is in the magnetic meridian------------------ 38 41 30 
Reading of azimuth circle when plane of instrument is in the true meridian 51 54 51 
Approximate magnetic declination 13 13 21 E. 
OBSERVATIONS FOR MAGNETIC INCLINATION AND INTENSITY—No. 2. 
[ 3 á | 
Def. N. 409 from dip. Det S. 40? from dip. i 
Face of circle. | Direct. Results. 
Er egt رو‎ o +; 
at 22 12 | at 102 12 | at 22 12 | at 102 12 Ther. 759 
0 , o , o , [o] H [e] , [e] 7 ” 
e 62 20 79 28 44 60 81 18 43 25 i b 
Fast 62 25 | 79 35 0 | 81 15 | 43 20 و زو‎ =a 
62 13 79 30 44 72 05 43 28 š "UT 
5 
8 62 14 30 [By deflectors 
62 07 + 29 20 44 8 81 02 43 15 
A A 62 05 T 28 44 55 81 05 43 22 
62 00 79 21 44 62 84 07 43 12 
o , Hi ° , ” ° , " 
Ox, ۳ 79 28 00 81 08 40 62 13 35 | Mean 
Means 62 11 40 ——— 
45 01 10 A3 20 20 
0 , "n v o 2 Hi 
E A Daer > ` 29 10 124 29 60 
9 ° xs ” 0 7 Di E 
Half sum of means — dip....... 62 H 35 62 M 30 + 5 04 š Yndex error. 
E 
€ ۴ " [^] , ” o 
Differences -- 34 ` 26 50 Bn. wu - 
š à o P " o , " o r " 
Angles of deflectiom........—...| WW 13 25 Ho 10 | 62 28 39 | True inclination. 
D 
