Horizontal Component of Magnetic Force, 1845. 
13 
TABLE XXII. — Hourly Means of the Scale Readings of the Bifilar Magnetometer, corrected 
for Temperature, for each Month in 1845. 
Mean Time. 
' 
Jan. 
Feb. 
Jlarch. 
April. 
May. 
June. 
July. 
Aug. 
Sept. 
Oct. 
Nov. 
Dec. 
Year. 
Gbtt. 
Mak. 
b. 
h. 
Sc. DiT. 
Sc. Dir. 
Sc. Div. 
Sc. Dir. 
Sc. Div. 
Sc. Div. 
Sc. Div. 
Sc. Div. 
Sc. Div. 
Sc. Div. 
Sc. Div. 
Sc. Div. 
Sc. Div. 
13 
12 
531-97 
53546 
537-80 
535-40 
539-33 
542-27 
541-59 
541-57 
536-77 
539-26 
541-97 
538-78 
538-51 
14 
13 
531-27 
534-91 
534-51 
533-75 
538-18 
540-78 
539-92 
539-37 
538-01 
540-23 
542-76 
539-54 
537-77 
15 
14 
526-11 
533-87 
532-13 
526-60 
537-21 
539-95 
539-07 
537-89 
535-62 
539-81 
542-87 
541-01 
536-01 
16 
15 
533-93 
533-95 
535-32 
534-97 
537-07 
539-57 
538-84 
538-85 
536-65 
541-74 
543-99 
541-93 
538-07 
1 7 
16 
535-94 
535-63 
533-77 
533-65 
536-85 
539-49 
537-58 
538-95 
536-96 
542-74 
544-91 
543-86 
538-36 
18 
17 
537-67 
536-03 
536-24 
535-38 
535-54 
537-68 
536-07 
537-22 
538-12 
542-07 
545-64 
545-51 
538-60 
1 Q 
18 
538-25 
537-63 
536-03 
534-45 
534-76 
535-72 
535-00 
534-65 
535-81 
541-46 
546-32 
546-32 
538-03 
20 
19 
538-55 
537-30 
534-73 
532-88 
530-52 
532-90 
532-82 
530-03 
530-13 
540-21 
544-91 
544-58 
535-80 
21 
20 
536-89 
535-91 
530-90 
527-70 
526-57 
529-20 
529-00 
526-02 
526-43 
535-22 
540-36 
543-52 
532-31 
22 
21 
536-46 
532-50 
528-22 
522-76 
524-59 
526-90 
526-68 
523-63 
523-59 
530-66 
535-61 
541-06 
529-39 
23 
22 
534-06 
531-56 
525-01 
520-52 
524-77 
525-94 
526-04 
524-09 
521-87 
529-50 
535-74 
538-49 
528-13 
23 
535-25 
531-93 
527-75 
522-09 
526-59 
529-37 
529-88 
527-32 
526-60 
530-20 
535-34 
536-76 
529.92 
1 
0 
535-72 
533-43 
531-71 
525-44 
530-88 
535-78 
533-73 
533-11 
531-47 
532-61 
538-35 
537-72 
533-33I 
2 
I 
537-44 
535-52 
533-96 
530-97 
536-34 
540-03 
538-20 
539-80 
537-02 
537-59 
540-99 
540-44 
537-36 
3 
2 
536-70 
537-34 
539-03 
536-23 
540 00 
543-74 
542-86 
541-36 
538-58 
538-91 
542-10 
542-14 
539-91 
4 
3 
536-92 
538-76 
540-26 
540-35 
544-30 
546-29 
546-43 
546-13 
540-49 
540-77 
543-11 
542-97 
.542-23 
5 
4 
536-84 
537-56 
541-06 
543-61 
548-14 
547-55 
548-13 
547-30 
541-90 
540-72 
542-24 
544-45 
543-29 
6 
5 
536-94 
537-43 
540-32 
545-40 
549-39 
549-32 
549-89 
547-73 
543-10 
541-30 
543-64 
545-01 
544-12 
7 
6 
536-80 
537-70 
540-37 
546-13 
550-47 
550-32 
552-12 
547-21 
545-31 
542-82 
543-06 
549-94 
545-18 
8 
7 
535-31 
538 17 
540-63 
545-44 
549-24 
550-64 
549-97 
548-39 
543-89 
542-91 
542-25 
546-16 
544-41 
9 
8 
535-94 
537-82 
538-25 
542-56 
546-57 
548-64 
549-39 
545-73 
540-40 
542-43 
541-90 
539-68 
542-44 
10 
9 
536 04 
537-64 
540-11 
541-40 
544-59 
546-88 
545-80 
544-00 
541-83 
542-46 
541-43 
540-22 
541-86 
11 
10 
533-37 
535-03 
538-45 
540-88 
542-35 
545-34 
543-12 
543-46 
539-66 
540-61 
541-70 
540-25 
540-35 
12 
11 
533 00 
536-35 
538-67 
539-69 
541-07 
543-26 
543-19 
543 18 
540-20 
539-99 
541-70 
540-18 
540-04 
TABLE XXIII. — Diurnal Variations of the Horizontal Component of Magnetic Force in 1845. 
Mak. 
M. T. 
Jan. 
Feb. 
March. 
April. 
May. 
June. 
July. 
Aug. 
Sept. 
Oct. 
Nov. 
Dec. 
Year. 
0-00 
0-00 
0-00 
O'OO 
0-00 
O'OO 
000 
0-00 
0-00 
n-oo 
0-00 
0-00 
0-00 
12 
0820 
0538 
1791 
2083 
2064 
2286 
2177 
2512 
2086 
1366 
0928 
0283 
1453 
13 
0722 
0469 
1330 
1852 
1903 
2078 
1943 
2204 
2260 
1502 
1039 
0389 
1350 
14 
0000 
0323 
0997 
0851 
1767 
1961 
1824 
1996 
1925 
1443 
1054 
0595 
1103 
15 
1095 
0335 
1443 
2023 
1747 
1908 
1798 
2131 
2069 
1714 
1211 
0724 
1392 
16 
1376 
0570 
1226 
1838 
1716 
1897 
1616 
2145 
2113 
1854 
1340 
0994 
1432 
17 
1618 
0626 
1572 
2080 
1533 
1644 
1404 
1903 
2275 
1760 
1442 
1225 
1466 
18 
1700 
0850 
1543 
1950 
1424 
1369 
1254 
1543 
1952 
1674 
1537 
1338 
1386 
19 
1742 
0804 
1361 
1730 
0830 
0974 
0949 
0896 
1156 
1499 
1340 
1095 
1074 
20 
1509 
0609 
0825 
1005 
0277 
0456 
0414 
0335 
0638 
0801 
0703 
0946 
0585 
21 
1449 
0132 
0449 
0314 
0000 
0134 
0090 
0000 
0241 
0162 
0038 
0602 
0176 
22 
1113 
0000 
0000 
0000 
0025 
0000 
0000 
0064 
0000 
0000 
0056 
0242 
0000 
23 
1280 
0052 
0384 
0220 
0280 
0480 
0538 
0517 
0662 
0098 
0000 
0000 
0251 
0 
1345 
0262 
0938 
0689 
0881 
1378 
lOA 
1327 
1344 
0435 
0421 
0134 
0728 
1 
1586 
0554 
1253 
1483 
1645 
1973 
1702 
2264 
2121 
1133 
0791 
0515 
1292 
2 
1483 
0809 
1963 
2199 
2157 
2492 
2355 
2482 
2339 
1317 
0946 
0753 
1649 
3 
1513 
1008 
2135 
2776 
2759 
2849 
2855 
3150 
2607 
1578 
1088 
0869 
1974 
4 
1502 
0840 
2247 
3233 
3297 
3025 
3093 
3314 
2804 
1571 
0966 
1076 
2122 
5 
1516 
0822 
2143 
3483 
3472 
3273 
3339 
3374 
2972 
1652 
1162 
1154 
2239 
6 
1497 
0860 
2150 
3585 
3623 
3413 
3651 
3301 
3282 
1863 
1081 
1845 
2387 
7 
1288 
0925 
2187 
3489 
3451 
3458 
3350 
3466 
3083 
1877 
0967 
1315 
2279 
8 
1376 
0876 
1854 
3086 
3077 
3178 
3269 
3094 
2594 
1810 
0918 
0408 
2003 
9 
1390 
0851 
2114 
2923 
2800 
2932 
2766 
2852 
2794 
1814 
0853 
0484 
1922 
10 
1016 
0486 
1882 
2850 
2486 
2716 
2391 
2776 
2491 
1555 
0890 
0488 
1711 
11 
0965 
0671 
1912 
2684 
2307 
2425 
2401 
2737 
2566 
1469 
0890 
0478 
1667 
MAG. AND MET. OBS. 1845 AND 1846. D 
