130 
MAGNETIC OBSERVATIONS, 
OBSERVATIONS—Continued. 
Station, Camp 111, White Cliff Creek; latitude, 35° 08' 07".70; longitude 7 h. 34m. 4.64s. 
Needle, B. Date, February 1, 1854. Hour of beginning, 4 h. 20 m. p. m.; hour of ending, 4 h. 45 m. p. m. 
Observer, Lieut. J. C. Ives, Topographical Engineers. 
o < " 
( 61 02 
Needle vertical, face of circle north, reading of azimuth circle..... I 61 05 
( 61 11 
( 61 06 
Needle vertical, face of circle south, reading of azimuth circle. J 61 06 
( 61 06 
Beading of azimuth circle when plane of instrument is in the magnetic meridian... 61 06 00 
Reading of azimuth circle when plane of instrument is in the true meridian.. 75 48 25 
Approximate magnetic declination..---- 14 42 25 E. 
OBSERVATIONS FOR MAGNETIC INCLINATION AND INTENSITY—No. 4. 
Face of circle. 
Direct. 
Def. with wt. 2 gr. 
Def. with wt. 2\ gr. 
Def. with wt. 3 gr. 
Def. towards 
the vertical. 
(1) 
Def. from 
the vertical. 
(2) 
Tlier. 
Fah. 
Def. towards 
the vertical. 
(1) 
Def. from 
the vertical. 
(2) 
Def. towards 
the vertical. 
(1) 
Def. from 
the vertical. 
(2) 
Easl.| 
O ' 
60 40 
60 40 
60 40 
60 35 
60 45 
60 35 
O ' 
87 02 
87 05 
87 02 
87 08 
87 00 
87 05 
O r 
34 15 
34 20 
34 18 
34 22 
34 15 
34 15 
o 
71 
o > 
94 30 
94 30 
94 25 
94 25 
94 20 
94 25 
O r 
27 05 
27 00 
27 03 
27 00 
27 05 
27 00 
O ' 
102 40 
102 40 
102 40 
102 15 
102 18 
102 15 
O ' 
18 60 
18 50 
18 58 
18 58 
18 62 
18 55 
West.| 
Means_ 
71 
o t II 
60 SO 10 
O ' " 
( (1) 87 03 40 ) 
| (2) 34 17 30 ) 
o 
71 
O i t> 
j (1) 94 25 50 ) 
j (2) 27 02 10 j 
O ' " 
j (1) 102 28 00 ) 
j (2) 18 57 10 j 
Corr. for index er¬ 
ror of needle_ 
Deduced inclina- 
i » 
+ 8 48 
o ' II 
52 46 10 
O 1 II 
67 23 40 
o / II 
83 30 50 
O 1 n 
60 47 58 
Half diff. or angles 
O i a 
26 23 05 
O ' " 
33 41 50 
O ' n 
41 45 25 
O ' " 
121 21 10 
O ' " 
121 28 00 * 
O ' " 
121 25 10 
O 1 I f 
60 40 35 
o • •• 
60 44 00 
o ' " 
60 42 35 
