106 MAGNETIC OBSERVATIONS. 
OBSERVATIONS—Continued. | 
Station, Camp 74, Navajo Spring ; latitude 35° 06' 19".44 ; longitude Th. 17m. 20. 65s.* 
Veedle, B. Date, November 30, 1853. Hour of beginning, 2h. p. m. ; hour of ending, 2h. 30m. p. m. 
Observer, Liew. J. C. Ives, Topographical Engineers. 
[o] 07 " 
60 51 
Needle vertical, face of circle north, reading of azimuth circle 60 44 
60 45 
60 50 
Needle vertical, face of circle south, reading of azimuth circle 60 34 
> 60 30 
Reading of azimuth circle when plane of instrument is in the magnetic meridian 60 42 20 
Reading of azimuth circle when plane of instrument is in the true meridian 74 05 39 
Approximate magnetic declination 13 23 .19 EK. 
OBSERVATIONS FOR MAGNETIC INCLINATION AND INTENSITY—No. 4. 
| | 
: | Def. with wt. 2 gr. Def. with wt. 23 gr. 
| 
Face of circle. | Direct. | | | | 
| Def. towards; Def.from | Ther. | Def. towards ` Def. from | Ther. 
| the vertical. | the vertical. | Fah. | the vertical. the vertical. | Fah. 
| (1) (2) | (1) (2) 
S 
| @ d Qe ant | ° ° , ° , ° 
| 61 45 87 40 36 45 | 62 94 40 28 30 62 
East 61 42 87 50 SU ME. 0 708 94 35 98 40 Q. sos s 
61 50 87 40 SO RE Sa 94 38 28- S9 as 
I | 7 | 
61 50 87 55 S LL. se 94--45---|— 189.40 - 4-4 > 
West 61 55 67 45 وہ‎ PO Ll. 下 | 
| 61 53 | 87 56 85 55 | 6t | 94 35 | 28 43 64 x 
e" ob و‎ R | o o e | 
(1) 87 47 30 || (1) 94 38 50 a 
ege 610 ] (2) 354135, j ری‎ sca d 
i # ,) x 
Cor. for index error of needle.... + 8 48 1 
° , “ 
Deduced inclination............ | 61 57 58 
I o H | ° , ” 
Differences | 51 58 20 رما ظا‎ Gua. Ja 
| | ——— 
Š 8 ا‎ | ° , f | o , ” 
Half diff. or angles of deflection 25 59 10 E 3 00 50 ۰ [.------ 
~ ° , ” , ” 
Sum of means "۶ ۷896 KE E N 123 16 00  .------- ` 
一 | 
° r " ° , ” 
Half sum 一 dip.--------------|------------ 61 48 20 BEE 61 38 00 _|-------- 
