14 
Results of Makerstoun Observations, 1845. 
TABLE XXIV. — List of Ten Days in each Month of 1845 upon which the Horizontal Component 
of Magnetic Foi*ce was least disturbed. 
Jan 
Feb. 
March. 
April. 
Mav 
June. 
»Tulv 
Sspt. 
Oct. 
Nov . 
Dec. 
d. 
d. 
d. 
d. 
d. 
d. 
d. 
d. 
d. 
d. 
d. 
d. 
,3 
1 
3 
1 
2 
3 
3 
7 
5 
13 
3 
1 
4 
3 
4 
3 
5 
13 
10 
11 
6 
14 
6 
2 
6 
4 
5 
4 
6 
14 
11 
12 
9 
16 
8 
9 
7 
7 
6 
5 
7 
19 
15 
14 
10 
17 
10 
10 
8 
8 
7 
7 
8 
20 
16 
16 
11 
23 
12 
11 
13 
12 
8 
10 
10 
21 
17 
20 
12 
27 
13 
19 
15 
14 
10 
11 
23 
24 
21 
21 
16 
28 
14 
20 
16 
15 
U 
16 
26 
25 
22 
25 
20 
29 
15 
22 
21 
18 
12 
17 
27 
26 
28 
26 
22 
30 
24 
25 
31 
19 
13 
22 
29 
27 
31 
28 
29 
31 
28 
26 
TABLE XXV. — Hourly Means of the Bifilar Magnetometer Scale Readings con'ected for Tempera- 
ture, for the Ten Days least disturbed in each Month of 1845, corrected so that the Mean of each 
Ten Days equals the Monthly Mean. 
Mak. 
M. T. 
.Jan. 
Feb. 
March. 
April. 
May. 
June. 
July. 
Aug. 
Sept. 
Oct. 
Nov. 
Dec. 
! Year. 
i 
li. 
Sc. Div. 
Sc. Div. 
Sc. Div. 
Sc. Dir. 
So. Dir. 
Sc. Dir. 
Sc. Div. 
Sc. Div. 
Sc. Dir. 
Sc. Div. 
Sc. Div. 
Sc. Div. 
i Sc. Div. 
12 
34-16 
35-93 
38-06 
39-14 
40-33 
42-69 
42-48 
42-42 
38-40 
41-06 
42-28 
40-69 
1 39-81 
13 
33 05 
3515 
36-21 
37-71 
.39-79 
40-98 
40-67 
40-22 
39-70 
39-73 
41-91 
41-19 
1 38-86 
14 
33-93 
34-80 
35-80 
36-53 
39- 1 1 
39-88 
39-24 
39-99 
37-72 
40-16 
42-58 
42-04 
38-48 
15 
34-29 
35-65 
36-30 
35-22 
38-79 
39-41 
39-41 
39-25 
38-48 
41-40 
43-79 
42-19 
! 38-68 
16 
35-00 
36-24 
36-59 
35-67 
38-38 
38-97 
38-24 
39-99 
37-28 
43-01 
44-18 
43-03 
38-88 
17 
36-48 
36-62 
36-99 
37-07 
36-35 
37-34 
36-19 
38-40 
38-31 
42-88 
44-83 
44-70 
38-85 
18 
36-47 
37-27 
36-55 
35-20 
34-95 
35-52 
34-44 
35-61 
37-08 
41-64 
44-66 
45-20 
37-89 
19 
36-92 
37-53 
35-89 
32-35 
31-91 
32-76 
32-81 
31-08 
31-30 
40-10 
42-93 
44-52 
35-84 
20 
35-87 
36-13 
32-49 
27-52 
27-38 
30-13 
28-06 
27-25 
26-54 
35-90 
38-00 
43-40 
32-39 
21 
35-40 
34-64 
29-29 
23-04 
24-61 
27-31 
25-85 
23-07 
23-30 
31-15 
35-40 
40-74 
29-49 
22 
33-46 
32-62 
26-34 
19-24 
24-51 
25-64 
26-04 
23-04 
22-14 
28-88 
33-63 
38-59 
27-85 
23 
33-89 
31-79 
26-89 
20-74 
26-09 
29-17 
29-67 
26-15 
25-83 
30-45 
34-78 
37-48 
29-41 
0 
35-08 
32-09 
30-73 
24-13 
30-44 
34-94 
33-55 
32-28 
30-32 
32-60 
38-40 
38-46 
32-75 
1 
36-12 
35-12 
32-71 
29-48 
35-34 
40-64 
37-44 
38-08 
36-13 
36-46 
41-22 
40-58 
36-61 
2 
35-10 
36-16 
36 02 
35-37 
39-57 
42-58 
43-27 
42-08 
39-13 
38-07 
42-60 
42-58 
39-38 
3 
35-81 
36-22 
38-31 
38-08 
44-04 
46-44 
46-61 
46-14 
38-35 
40-31 
44-27 
42-93 
41-46 
4 
36-85 
36-37 
38-77 
39-99 
45-46 
47-60 
48-38 
45-86 
40-22 
40-00 
44-69 
44-03 
42-35 
5 
37- 12 
37-62 
38-32 
42-79 
48-14 
49-54 
49-50 
45-97 
42-74 
41-49 
44-67 
44-26 
43-52 
6 
36-51 
37-56 
38-61 
43-81 
48-63 
50-46 
51-17 
46-31 
43-72 
42-25 
43-98 
44-21 
43-94 
7 
35-22 
36-99 
39-87 
43-88 
47-37 
50-56 
50-53 
46-91 
43-47 
42-27 
43-55 
43-10 
43-65 
8 
34-97 
37-07 
38-32 
41-34 
45-72 
49-16 
49-11 
45-76 
42-18 
41-71 
43-39 
42-28 
42-59 
9 
.34-98 
36-59 
38-54 
40-19 
44-95 
47-01 
45-37 
45-17 
39-68 
42-85 
42-06 
41-34 
41-56 
10 
35-93 
36-30 
38-56 
40-07 
42-47 
45-07 
44-28 
43-47 
39-87 
41-62 
42-36 
40-98 
40-92 
11 
34-76 
36-97 
38-96 
39-67 
41-08 
43-77 
42-85 
42-47 
38-53 
40-27 
42-80 
40-33 
40-21 
