24 RESULTS OF MAKERSTOUN OBSERVATIONS, 1845. 
TABLE XLIII.—Mean Difference of a Single Observation of the Balance Magnetometer from the 
Monthly Mean at the corresponding hour, for each Hour in each Month in 1845. 
Jan. . | March. | April. 5 . . | Sept. | Oct. Nov. 
| Mic. Diy. .| Mie. Div. | Mic. Div. : -| Mic. Diy.| Mie. Diy.| Mic. Div.| Mic. Div. | Mic. Div. 
25:3 . 23-4 | 49-4 : : : 18-8 8-1 13-1 
23-3 : 30-1 | 36-1 . : . 25-7 | 18:3 | 14-1 
36-3 : 44-2 : D . : 25-0 | 19-1 17-7 
30-3 : : 25-9 . . “ : . 17-4 | 17-8 
26-5 a 24. 31-5 . : . ° . . 16-5 
21-8 . . 18-7 . . . 5 . . 16-3 
19-7 
18-3 
18-1 
17-0 
14:5 
11.2 
11-4 
11-8 
12-7 
14-9 
14-9 
15-1 
16-8 
17-1 
16:5 
15-5 
24-2 
26-7 
SK COOMONAUBRWNKe SO 
i 
VARIATIONS OF MAGNETIC Dip. 
TABLE XLIV.—Variations of Magnetic Dip, with reference to the Moon’s Age, Declination, and 
Distance from the Earth, as deduced from Tables XIX. and XXXII. 
Variations Variations|| After | Variations| After | Variations|} Before | Variations Variations 
Moon’s of ~*| Moon’s of Moon of Moon of a of of 
Age. | Magnetic | Age. | Magnetic |/farthest| Magnetic |farthest| Magnetic Magnetic Magnetic 
Dip. Dip. North. Dip. Dip. Perigee.| Dip. | Dip. 
u D: 
0-144 
0-228 
0-402 
0-246 
0-175 
0-413 
0-260 
0-229 
~] 
S 
3 
=] 
S 
2 
0-106 
0-270 
0-087 
0-100 
0-192 
0-076 
0-171 
0-059 
0-154 
0-267 
0-166 
0-069 
0-296 
0-215 
0-192 
0-287 
0-166 
0-235 
0-160 | 
0-287 | 
0-231 — 
0-069 
0-000 
0-100 
0-445 
0-567 
0-288 
0-215 
0-219 
0-219 
0-313 
0-318 
0-295 
0:337 
0-254 
0-171 0-451 
0-259 0-189 
0-228 0-091 
0-000 0-103 
0-028 2 0-110 
0-018 0-092 
0-052 0-104 
CoOonNauwwne og 
OHNYRSHMR WWE Of 
0-199 
0-188 
MIOURwWNE De NwRaUgs 
SOUkWNeEPenwakaaonr 
| 
| 
| 
0-167 | 
