34 
Results of Makerstoun Observations, 1846. 
TABLE LXI. — Means of the Scale Readings of the Bifilar Magnetometer, corrected for Temperature, 
at the Observation Hours, for each Month in 1846. 
Mean Time. 
Jan. 
Feb. 
March. 
April. 
May. 
June. 
July. 
Aug. 
Sept. 
Oct. 
Nov. 
Dec. 
Year. 
iVl clK t 
il. 
h. 
Sc. Div. 
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 o 
1 7 
u^u' O f 
547-45 
549 
02 
548 
68 
543 
22 
540-90 
542-03 
543-94 
0'± / -£7 / 
1 Q 
547-46 
546 
76 
546 
10 
540 
26 
535-67 
OtJ<J'\JO 
5^6-96 
536-75 
553-46 
544-23 
543-83 
538 
30 
533 
86 
532 
03 
5S2.08 
526-15 
528-20 
5^7. 'ifi 
545-74 
OOO \}\J 
<IO t -oo 
23 
22 
542-24 
543-07 
536 
20 
531 
72 
529 
75 
532-04 
532-12 
528-86 
531-94 
5Sfi-2S 
543-22 
0 
23 
541-96 
543-71 
535 
86 
531 
36 
534 
27 
537-17 
536-36 
534-26 
534-15 
537-48 
544-82 
553-94 
538-78 
1 
0 
542-37 
545-36 
539 
07 
535 
38 
539 
37 
542-23 
542-78 
539-35 
542-78 
540-06 
547-45 
554-58 
542-56 
2 
1 
546-14 
546-70 
545 
98 
543 
19 
549 
74 
548-67 
547-38 
547-17 
550-50 
546-84 
550-60 
557-17 
548-34 
4 
3 
546-96 
549-18 
553 
02 
553 
04 
559 
91 
557-77 
564-58 
556-14 
559-57 
554-02 
554-28 
558-95 
555-62 
6 
5 
548-77 
549-64 
553 
14 
559 
72 
570 
52 
564-93 
573-19 
567-43 
560-99 
552-21 
559-36 
560-30 
560-02 
7 
6 
547-17 
548-87 
552 
88 
561 
72 
565 
29 
566-62 
570-56 
566-62 
553-76 
553-74 
560-94 
560-70 
559-07 
8 
7 
548-96 
550-15 
552 
59 
556 
87 
566 
47 
564-47 
566-62 
562-58 
552-96 
551-77 
558-50 
560-53 
557-71 
10 
9 
547-27 
547-06 
552 
71 
550 
87 
551 
26 
555-41 
557-42 
552-17 
542-90 
551-08 
553-95 
556-96 
551-59 
TABLE LXII. — Diurnal V ariations of the Horizontal Component of Magnetic Force for each 
Month in 1846. 
Mak. 
M. T. 
Jan. 
Feb. 
March. 
April. 
May. 
.June. 
July. 
Aug. 
Sept. 
Oct. 
Nov. 
Dec. 
1 Year. 
h. 
ll-OU 
0-00 
O'OO 
O-OO 
0-00 
"•00 
(I'OO 
0-00 
o-no 
0-00 
0-00 
0-00 
1 0-00 
17 
1027 
0591 
1777 
2338 
1818 
1350 
1574 
2144 
2125 
2137 
1669 
0922 
i 1526 
19 
0760 
0593 
1471 
1990 
1419 
0644 
0887 
1459 
1154 
1341 
1382 
0792 
1061 
21 
0306 
0103 
0329 
03.37 
0308 
0000 
0000 
0000 
0000 
0173 
0340 
0418 
0096 
22 
0038 
0000 
0046 
0049 
0000 
0154 
0005 
0366 
0505 
0000 
0000 
0000 
'. 0000 
23 
0000 
0086 
0000 
0000 
0610 
0846 
0578 
1095 
0803 
0162 
0216 
0186 
0285 
0 
0055 
0309 
0433 
0543 
1299 
1530 
1444 
1782 
1968 
0510 
0571 
0273 
0796 
1 
0564 
0490 
1366 
1597 
2699 
2399 
2065 
2838 
3010 
1426 
0996 
0622 
1 157(? 
3 
0675 
0825 
2317 
2927 
4072 
3627 
4387 
4049 
4235 
23 95 
1493 
0863 
2558 
5 
0919 
0887 
2333 
3829 
5504 
4594 
5550 
5573 
4427 
2151 
2179 
1045 
3152 
6 
0703 
0783 
2298 
4099 
4798 
4822 
5195 
5463 
3451 
2357 
2392 
1099 
, 3025 
7 
0945 
0956 
2259 
3444 
4957 
4532 
4663 
4918 
3343 
2091 
2063 
1076 
2840 
9 
0717 
0539 
2275 
2634 
2904 
3309 
3421 
3513 
1984 
1998 
1449 
0594 
20H 
