MAGNETIC OBSERVATIONS. 
OBSERV ATIONS— Continued. 
101 
Date. Hours and | Reading of | No. 790, cis- | Ther. Ther. Remarks. 
minutes. dip. needle. | tern barome- | Fah. Att. 
ter. 
1853. h. 8 ٥ ٥ 
Nov. 23 | 10 30a. m 61 58 24. 005 54.0 60.0 | Clear sky ; € mile easterly wind. 
10 45 61 53 24. 019 52.0 65.0 Do. o. 
11 00 61 55 24. 010 57.0 66.0 Do. $ dio southerly wind. 
11 ۵ 61 55 24. 004 62. 0 66.0 Do. no wind. 
11 30 61 56 23. 989 65.0 68.0 Do. do. 
11 45 61 56 23. 974 67.0 70.0 Do. do. 
12 00m. 61 55 23. 984 10.0 12.0 Do. )-mile southerly wind. 
12 15p.m 61 57 23. 992 12.0 18.0 Do. -mil do. 
12 30 61. 57 23. 996 72.0 13.0 Do. -mile do. 
12 45 61 57 23. 996 12.0 13.0 Do. 2-mile do. ` 
1 00 61 55 23. 996 72.0 73.0 Do. -mijle do. 
1 5 61 56 23. 996 12.0 72.0 Do. -mile do. 
1 «80 61 58 23. 996 72.0 72.0 Do. ¿mile do. 
1 45 61 55 23. 968 77.0 15,0 Do. -mile do. 
2 00 61 50 23. 976 76.0 77,0 Do. )-mile do. 
2 15 61 55 23.980 | 79.0 | 75.0 Do. )-mile do. 
I 
Station, Camp 70, 
Zuni river ; latitude 35° 05' 
41.9 ; longitude Th. 14m. 35. 56s. 
Needle, C. Date, November 22, 1853. Hour of beginning, 1h. p. m. ; hour of ending, 1h. 30m. p. m. 
Observer, Lieut. J. C. Ives, Topographical Engineers. 
O , ” 
28 37 
Needle vertical, face of circle north, reading of azimuth circle ۱ = 08 
28 14 
Needle vertical, face of circle south, reading of azimuth circle ۹ ; سم‎ e 
Reading of azimuth circle when plane of instrument is in the magnetic idi 28 23 10 
Reading of azimuth circle when plane of instrument is in the true meridian 
Approximate magnetic declination 
OBSERVATIONS FOR MAGNETIC INCLINATION—No. 1. 
With marked end of needle, N ms With marked end of needle, ۰ E 3 
pole. $ 3 pole. © ® 
i as 842 
Face of circle. E 8 Š 5 
2 Ë 
North Lae - South end of 24 North end of | South end of og 
needle needle reads—| تا‎ | needle reads— | needle reads— | تق‎ 
o n" ° i o | 
62 05 62 13 ور‎ 
East. 62 13 s 1B . |n | 
62 00 rdi سس شا مر‎ | 
$ 62 00 Hn oi. | 
West 62 10 Ba. | 
7 08 61 58 | 
° , “ ° n H ° | 
Means. ^ à 62 06 00 | 62 04 00 76 | 
| 
Mean result for magnetic inclination 
