Magnetic Declination, 1846, 31 
TABLE LV. — Means of Westerly Declination at the Observation Hours, for each Month in 1846. 
Mean Time. 
Jan. 
Feb. 
March. 
April. 
May. 
June. 
July. 
Aug. 
Sept. 
Oct. 
Nov. 
Dec. 
Year. 
Gbtt. 
Mak. 
!i. 
li. 
25° 
25° 
25° 
25° 
25° 
25° 
25° 
25° 
25° 
25° 
25° 
25° 
25° 
18 
17 
8-09 
6-61 
5-36 
4-01 
2-15 
1-70 
2-21 
2-58 
2-97 
2-85 
2-83 
2-28 
3-64 
20 
19 
9-16 
7-86 
5-10 
2-80 
0-84 
1-46 
1-02 
3-18 
4-04 
3-96 
3-28 
3-03 
3-81 
22 
21 
9-52 
912 
5-12 
4-60 
4-43 
3-68 
3-80 
4-05 
7-48 
4-48 
3-14 
3-33 
5-23 
23 
22 
10-30 
9-75 
8-04 
6-38 
7-37 
6-61 
6-80 
7-48 
9-64 
6-35 
4-81 
4-15 
7-31 
0 
23 
11-48 
11-08 
11-58 
10-92 
10-76 
9-09 
10-41 
10-62 
11-60 
9-00 
6-79 
5-37 
9-89 
1 
0 
11-79 
11-50 
14-10 
13-86 
12-71 
11-40 
12-35 
12-79 
12-45 
10-78 
8-57 
6-17 
11-54 
2 
1 
1 1 *7'=i 
1 !• / D 
1 D*DD 
1 ^ ^ft 
1 D*Oo 
1 O'DO 
1 ^'O / 
1 0 OA 
1 Q on 
I 9 1 ft 
11 1 r\ 
1 1 -111 
o- 1^1 
D-4a 
1 O 1 ^ 
4 
3 
10-82 
9-95 
11-47 
12-25 
10-99 
11-52 
10-83 
9-78 
8-06 
8-70 
6-12 
4-67 
9-60 
6 
5 
9-09 
7-77 
7-65 
7-56 
7-56 
8-18 
8-48 
5-96 
4-86 
3-54 
4-81 
3-42 
6-57 
7 
6 
7-37 
6-94 
6-45 
5-76 
6-71 
6-95 
6-99 
4-02 
3-48 
1-86 
3-75 
2-31 
5-22 
8 
7 
7-68 
7-21 
5-58 
3-92 
5-11 
6-35 
613 
4-22 
0-46 
2-19 
2-81 
202 
' 4-47 
10 
9 
6-10 
5-70 
5-36 
4-44 
4-22 
5-19 
4-25 
3-28 
2-63 
2-06 
-0-10 
0-66 
3-65 
TABLE LVI. — Diurnal Variations of Westerly Declination for each Month in 1846. 
Mak. 
M. T. 
Jan. 
Feb. 
March. 
April. 
May. 
June. 
July. 
Aug. 
Sept. 
Oct. 
Nov. 
Dec. 
Year. 
h. 
17 
1-99 
0-91 
0-26 
1-21 
1-31 
0-24 
1-19 
0-00 
2-51 
0-99 
2-93 
1-62 
0-00 
19 
3-06 
2-16 
0-00 
0-00 
0-00 
0-00 
0-00 
0-60 
3-58 
2-10 
3-38 
2-37 
0-17 
21 
3-42 
3-42 
0-02 
1-80 
3-59 
2-22 
2-78 
1-47 
7-02 
2-62 
3-24 
2-67 
1-59 
22 
4-20 
4-05 
2-94 
3-58 
6-53 
515 
5-78 
4-90 
9-18 
4-49 
4-91 
3-49 
3-67 
23 
5-38 
5-38 
6-48 
8-12 
9-92 
7-63 
9-39 
8-04 
1114 
7-14 
6-89 
4-71 
6-25 
0 
5-69 
5-80 
9-00 
11-06 
11-87 
9-94 
11-33 
10-21 
11-99 
8-92 
8-67 
5-51 
7-90 
1 
6-54 
6-05 
10-56 
12-58 
12-79 
11-41 
11-94 
10-62 
11-70 
9-24 
8-24 
5-77 
8-52 
3 
4-72 
4-25 
6-37 
9-45 
10-15 
10-06 
9-81 
7-20 
7-60 
6-84 
6-22 
4-01 
5-96 
5 
2-99 
2-07 
2-55 
4-76 
6-72 
6-72 
7-46 
3-38 
4-40 
1-68 
4-91 
2-76 
2-93 
6 
1-27 
1-24 
1-35 
2-96 
5-87 
5-49 
5-97 
1-44 
3-02 
000 
3-85 
1-65 
1-58 
7 
1-58 
1-51 
0-48 
1-12 
4-27 
4-89 
5-11 
1-64 
0-00 
0-33 
2-91 
1-36 
0-83 
9 
0-00 
0-00 
0-26 
1-64 
3-38 
3-73 
3-23 
0-70 
217 
0-20 
0-00 
0-00 
0-01 
