16 
Results of Makeestoun Obseevations, 1845. 
TABLE XXVIII. — Mean Difference of a Single Observation of the Bifilar Magnetometer from 
the Monthly Mean at the corresponding Hour, for each Civil Day and Week in 1845. 
Civil 
Day. 
Jan. 
Feb. 
March. 
April. 
May. 
June. 
July. 
Aug. 
Sept. 
Oct. 
Nov. 
Dec. 
Sc. Div. 
Sc. Div. 
Sc. Div. 
Sc. Div. 
Sc. Div. 
Sc. Div. 
Sc. Div. 
Sc. Div. 
Sc. Div. 
Sc. Div. 
Sc. Div. 
Sc. Div. 
1 
4-12' 
1-97 
2-12' 
1-92 
6-86 
[4-15] 
4-23' 
5-14 
4-31 
2-49 
7-55 
2-04' 
2 
2-81 
[2-97] 
[2-89] 
3-39 
4-43 
3-55 
3-30 
3-49 
6-07 
2-58 
[4-54] 
2-43 j 
3 
2-09 
1-78 
2-29 
3-71 
3-68 
2-81 
1-.34 
[4-28] 
3-45 
3-19 
3-28 
24-36 1 
4 
2-88 
2-32 
2-90 
5-39 
[3-71] 
5-00 
2-37 
6-92 
5-61 
1-66 
3-86 
17-03 
5 
[3-92] 
3-78 
2-90 
2-42 
2-24 
2-99 
3-50 
3-56 
3-23 
[2-66] 
4-22 
6-06 
6 
4-52 
4-73 
2-72 
[3-60] 
2-20 
2-87 
[2-69] 
3-70 
2-85 
3-92 
1-99 
3-84 
7 
6-04 
2-44 
4-00 
3-06 
2-83 
2-75 
3-67 
2-20 
[3-97] 
2-39 
4-30 
[5-90] 
8 
5-20 
1-59 
2-99 
3-13 
1-66 
[3-02] 
2-48 
4-16 
4-81 
2-20 
1-59 
2-65 
9 
14-28 
[2-67] 
[2-70] 
3-87 
2-55 
3-08 
2-77 
2-95 
4-31 
5-86 
[2-32] 
2-52 
10 
11-05 
2-42 
2-17 
4-46 
2-48 
4-32 
1-54 
[3-18] 
3-03 
7-63 
1-88 
3-28 
11 
1-72 
1-81 
1-87 
3-51 
[2-88] 
2-10 
2-22 
2-28 
3-63 
3-35 
1-91 
3-32 
12 
[6-36] 
3-04 
2-44 
4.75 
3-29 
3-95 
3-10 
2-67 
4-03 
[3-87] 
2-28 
3-09 
13 
3-20 
3-07 
2-90 
[6-84] 
3-34 
4-60 
[2-55] 
4-85 
3-50 
1-85 
2-65 
6-14 
14 
4-19 
2-32 
4-86 
22-47 
3-98 
2-99 
2-87 
3-44 
[3-33] 
2-12 
2-98 
[3-98] 
15 
3-70 
2-65 
2-99 
3-07 
3-90 
[3-19] 
2-63 
5-45 
1-72 
2-42 
3-45 
5-64 
16 
2-36 
[3-00] 
[3-52] 
2-81 
5-20 
2-13 
2-93 
3-33 
3-81 
2-43 
[4-11] 
2-38 
17 
4-21 
4-19 
3-55 
2-35 
3-67 
2-76 
2-05 
[3-88] 
3-30 
3-22 
7-65 
3-29 
18 
3-93 
2-52 
2-92 
4-55 
[4-00] 
2-74 
2-75 
4-84 
5-43 
3-85 
4-97 
2-98 
19 
[5-11] 
3-25 
3-90 
5-53 
5-43 
1-75 
3-35 
2-92 
4-15 
[4-081 
2-98 
2-41 
20 
11-75 
7-02 
5-11 
[3-94] 
3-20 
3-14 
[2-80] 
3-32 
3-46 
3-87 
1-68 
3-02 
21 
2-76 
4-80 
2-64 
5-00 
2-60 
1-71 
3-00 
2-91 
[4-65] 
6-32 
2-62 
[3-63] 
22 
5-63 
3-89 
2-43 
3-47 
3-82 
[2-30] 
1-87 
3-20 
2-05 
4-80 
1-98 
I 4-50 
23 
4-52 
[6-22] 
[4-50] 
2-75 
2-47 
2-71 
3-81 
3-85 
4-36 
1-00 
[3-18] 
5-30 
24 
5-47 
8-52 
4-94 
4-65 
3-86 
2-01 
5-43 
[3-74] 
8-27 
2-71 
1-97 
1 3-57 
25 
4-23 
7-06 
7-39 
3-91 
[3-30] 
2-48 
10-76 
3-36 
9-50 
3-86 
5-26 
• 4-46 
26 
[5-03] 
604 
4-52 
3-50 
2-38 
2-59 
3-75 
5-50 
5-03 
[2-78] 
5-59 
4-58 
27 
4-84 
3-55 
5-90 
[4-86] 
3-03 
3-03 
[4-60] 
3-63 
6-12 
2-38 
5-33 
4-27 
28 
5-61 
3-59 
2-52 
7-86 
4-24 
3-66 
2-60 
2-48 
[5-08] 
4-40 
3-59 
[4-131 
29 
5-50 
3-11 
5-17 
4-03 
[3-41] 
2-67 
8-27 
3-97 
2-35 
3-84 
3-12 
30 
4-06 
[3-23] 
4-07 
4-80 
3-63 
2-37 
8-75 
3-40 
4-29 
[6-93] 
1 5-90 
31 
3-90 
2-57 
4-74 
2-87 
[5-55] 
4-07 
2-43 
TABLE XXIX. — Mean Difference of a Single Observation of the Bifilai* Magnetometer from the 
Monthly Mean at the corresponding Hoiir, with reference to the Moon's Age and Declination, 
for 1845. 
After 
After 
Moon's 
Mean 
Moon's 
Mean 
Moon 
Mean 
Moon 
Slean 
Age. 
Diiference. 
Age. 
Difference. 
farthest 
Difference. 
farthest 
Difference. 
North. 
North. 
Day. 
Sc. Div. 
Day. 
Sc. Div. 
Dav. 
Sc. Div. 
Dav. 
Sc. Div. 
15 
3-61 
0 
3-61 
6 
3-30 
14 
3-78 
16 
3-44 
1 
4-86 
1 
4-21 
15 
3-08 
17 
4-03 
2 
3-74 
2 
4-09 
16 
3-32 
18 
4-48 
3 
3-11 
3 
5-S8 
17 
6-20 
19 
4-09 
4 
4-96 
4 
4-01 
18 
5-36 
20 
4-28 
5 
4-44 
5 
4-37 
19 
3-62 
21 
4-78 
6 
3-61 
6 
3-54 
20 
3-50 
22 
3-98 
7 
3-51 
7 
4-74 
21 
3-37 
23 
4-05 
8 
5-41 
8 
4-09 
22 
3-24 
24 
3-72 
9 
3-37 
9 
4-37 
23 
3-71 
25 
3-41 
10 
3-38 
10 
4-24 
24 
3-07 
26 
4-04 
11 
3-37 
11 
3-42 
25 
3-36 
27 
4-31 
12 
4-14 
12 
3-29 
26 
3-71 
28 
3-64 
13 
3-21 
13 
3-53 
27 
3-61 
29 
3-76 
14 
3-63 
