MAGNETIC OBSERVATIONS, 
101 
OBSERVATIONS—Continued. 
Date. 
Hours and 
minutes. 
Reading of 
dip. needle. 
No. 790, cis¬ 
tern barome¬ 
ter. 
Ther. 
Fall. 
Ther. 
Att. 
Remarks. 
1853. 
h. 
m. 
o 
/ 
o 
o 
Nov. 23 
10 
30 a. m. 
61 
58 
24. 005 
54. 0 
60. 0 
Clear skv ; 
2-mile easterly wind. 
10 
45 
61 
53 
24. 019 
52. 0 
65.0 
Do. 
3-mile 
do. 
11 
00 
61 
55 
24. 010 
57. 0 
66.0 
Do. 
2-mile southerly wind. 
11 
15 
61 
55 
24. 004 
62. 0 
66. 0 
Do. 
no wind. 
11 
30 
61 
56 
23. 989 
65. 0 
68. 0 
Do. 
<lo. 
11 
45 
61 
56 
* 23.974 
67. 0 
70.0 
Do. 
do. 
12 
00 m. 
61 
55 
23. 984 
70. 0 
72. 0 
Do. 
2-mile southerly wind. 
12 
15 p. m. 
61 
57 
23. 992 
72. 0 
78. 0 
Do. 
2-mile 
do. 
12 
30 
61 
57 
23. 996 
72. 0 
73. 0 
Do. 
2-mile 
do. 
12 
45 
61 
57 
23. 996 
72. 0 
73. 0 
Do. 
2-mile 
do. 
1 
00 
61 
55 
23. 996 
72.0 
73. 0 
Do. ' 
2-mile 
do. 
1 
15 
61 
56 
23. 996 
72. 0 
72. 0 
Do. 
2-mile 
do. 
1 
30 
61 
58 
23. 996 
72. 0 
72. 0 
Do. 
2-mile 
do. 
1 
45 
61 
55 
23. 968 
77. 0 
75.0 
Do. 
2-mile 
do. 
2 
00 
61 
50 
23. 976 
76. 0 
77.0 
Do. 
2-mile 
do. 
2 
15 
61 
55 
23. 980 
79. 0 
75. 0 
Do. 
2-inile 
do. 
Station, Camp VO, Zuhi river; latitude 35° 05' 41". 9 ; longitude 7 li. 14 m. 35.56s. 
Needle, C. Date, November 22, 1853. Hour of beginning, 1 h. p. m. ; hour of ending, 1 h. 30m. p. m. 
Observer, Lieut. J. C. Ives, Topographical Engineers. 
o 
( 28 
37 
Needle vertical, face of circle north, reading of azimuth circle.... 
_ { 28 
08 
( 28 
40 
f 28 
14 
Needle vertical, face of circle south, reading of azimuth circle___ 
. { 28 
40 
( 28 
00 
Reading of azimuth circle when plane of instrument is in the magnetic meridian... 
. 28 
23 1 0 
Reading of azimuth circle when plane of instrument is in the true meridian 
Approximate magnetic declination 
OBSERVATIONS FOR MAGNETIC INCLINATION—No. 1. 
Face of circle. 
With marked end of needle, N. 
pole. 
Thermometer 
Fahrenheit. 
With marked end of needle, S. 
pole. 
Thermometer 
Fanrenheit. 
North end of 
needle reads— 
South end of 
needle reads— 
North end of 
needle reads—- 
South end of 
needle reads— 
o n 
o / 
o 
O 1 
o / 
o 
62 05 
62 13 x 
76 
61 45 
61 50 
76 
East._< 
62 13 
62 18 
62 00 
61 57 
62 00 
62 05 
61 48 
61 50 
62 00 
61 50 
62 03 
62 00 
West___) 
62 10 
62 00 
62 05 
62 00 
62 08 
61 58 
76 
62 13 
62 12 
76 
o / // 
o Ilf 
o 
o / // 
o / // 
o 
Means... 
62 06 00 
62 04 00 
76 
61 59 00 
61 58 10 
76 
Mean result for magnetic inclination_ 
o ' " 
- 62 01 47 
• 
