88 MAGNETIC OBSERVATIONS 
OBSERV ATIONS— Continued. 
Station, Camp 59, Albuquerque ; latitude 35° 05' 50"; longitude Th. 6m. 31.475. 
Needle, B. Date, October 21, 1853. Hour of beginning, 12h. 30m. p. m. ; hour of ending, 1h. 15m. p. m. 
Observers, Lieut. A. W. Whipple and Lieut. J. C. Ives, Topographical Engineers. 
š ۱ 388 6 
Needle vertical, face of circle north, reading of azimuth circle | 38 22 
38 16 
f 38 35 
Needle vertical, face of circle south, reading of azimuth circle I 38 52 
38 52 
Reading of azimuth circle when plane of instrument is in ti idi g 38 32 10 
Reading of azimuth circle when plane of instrument is in the irs idi 51 54 51 
Approximate magnetic declination 13 22 41E. 
OBSERVATIONS FOR MAGNETIC INCLINATION— No. 2. 
Def. N. 409 from dip. | Def. S. 40? from dip. 
Face of circle. Direct. | Results. 
6c E وخ ہت‎ 
at 22 20 |at 102 20 | at 22 20 |at 102 0 š 
ony O OT poc Oc Qc y 
62 22 79 60 44 35 80 60 43 35 : 
Fast 62 20 | 79 60 | 44 37 | 80 68 | 43 30 DE OM LE 
62 28 79 58 44 40 80 62 43 33 - i 
à 62 16 40 
Ss. | 62 17 40 | (By deflectors. 
62 10 79 45 44 35 80 57 3 32 
West 59 anki 62 25 79 44 40 80 60 43 7 
62 17 79 52 44 48 80 58 0 
o + ” 0 , " 0 , " [9] , Ki 
79 54 10 81 00 50 62 18 10 | Mean 
MORAS ےئ ہے‎ 82.1 62 20 20 一 一 
44 39 10 43 34 30 
o , ” fe) , " 
Sum of means 124 33 20 124 35 20 
Ss 0 I “H ° , , E 
Half sum — dip 62 16 40 62 17 40 + 8 48 | Hndex error: 
T E 
o 
° , “ o 1 H o 
ITT TEE ٦ 15 50 37 17 40 
Half > seme. — e o d 2 o f " E EE e 
flec مات ند‎ H. S 30 18 43 10 62 26 58 | True inclination. 
