18 RESULTS OF MAKERSTOUN OBSERVATIONS, 1845. 
TABLE XXXI.—Mean Values of the Variations of the Vertical Component of Magnetic Force, the 
whole Vertical Component being Unity, for each Civil Week-Day and Week of 1845. 
Civil | 
Day Jan. Feb. March. | April. May. June. July. Aug. Sept. Oct. Novy. Dec. 
ay. 
|| 0-00 ooo | ovo 0,00 0-00 ooo | 0-00 0-00 0-00 0-00 0:00 0-00 
1 | 6201 5760 5601 5468 | 4717 | [5100]| 4573 4771 4489 4493 4319 | 4264 
2 6150 | [5786] | [5555]) 5401 5305 5082 | 4912 4369 4505 4326 | [4398]| 4295 
3 || 6089 5774 5560 5517 5275 5090 | 4813 | [4626]| 4905 4475 4330 5219 
4 
5 
| 6014 5712 5525 5492 | [5262]| 5262 | 4883 4693 4842 | 4381 4535 | 4683 
[6036] | 5993 5524 5475 5425 5164 | 4737 4635 4744 | [4415]| 4766 4703 
6 5983 5823 5478 | [5481]| 5419 5061 | (4746]} 4651 4843 4523 4436 | 4577 
7 5977 5712 5487 5460 5432 5056 4685 4662 | [4698]| 4427 | 4264 | [4547] 
8 6001 5708 5520 5412 5462 | [5063]| 4694 4525 4673 4361 4150 | 4535 
9 | 5977 | [5710]| [5520]| 5533 5329 5019 | 4662 4654 4581 4262 | [4294]} 4419 
10 | 6068 5643 5525 5378 5279 5011 4743 | [4701]| 4504 | 4297 4359 | 4365 
11 6032 5677 5569 5481 | [5199]| 5066 4766 | 4812 4625 4478 4195 | 4295 
12 || [5987]| 5698 5536 5523 5001 4980 4936 4760 4566 | [4283]} 4360 | 4317 
| 6018 5582 5528 | [3324]| 5057 4996 | [4829]| 4793 4543 4376 4423 4506 
14 5957 5588 5507 4848 5069 4957 4897 4687 | [4582]| 4155 4398 | [4315] 
15 5872 5593 5455 5325 5119 | [5083]| 4892 4800 | 4638 4131 4381 4315 
16 5912 | [5562] | [5472]| 5387 5158 5171 4739 4887 4575 4267 | [4379]| 4213 
17 5959 5587 5356 5431 5194 5187 4732 | [4732]| 4548 4288 4405 4247 
18 5856 5542 5474 5458 | [5149]| 5210 4648 4537 4168 | 4237 4392 | 4333 
19 | [5750]|] 5478 5511 5245 4905 | 4881 4620 | 4724 4345 | [4237]] 4273 4322 
20 || 5131 5450 5424 | (5368]} 5318 4895 | [4728]| 4756 4543 4214 4200 | 4256 
21 | 5815 5562 5418 5330 5202 4816 4764 | 4737 | [4422]| 4287 | 4326 | [4249] 
22 5834 5580 5322 5384 5227 | [4948]| 4759 4758 4474 4128 4408 4239 
23 |) 5887 | [5464]} [5387]] 5359 5162 | 5051 4845 4567 4584 4299 | [4307]| 4187 
24 =| 5757 5320 5391 5407 5219 | 4988 4918 | [4646]| 4418 | 4414 4453 4155 
25 || 6016 5387 5282 5462 | [5226]| 5055 4249 4508 4301 4291 4370 3974 
26 || [5846]} 5484 5488 5252 5259 4991 4681 4646 4340 | [4304]| 4083 3919 
27 5853 5531 5438 | [5245]| 5274 | 4986 | [4675]| 4662 4435 4413 3906 4029 
28 5909 5588 5422 4966 5218 5047 4715 4555 | [4379]! 4236 3980 | [4011] 
29 || 5654 5509 5142 | 5111 | [4891]| 4769 | 4326 | 4381 4174 3967 | 4122 
30 || 5766 [5457] | 5243 5084 | 4837 4716 | 4253 | 4322 | 4159 | [4272] 3975 
31 5711 5502 4970 4636 | [4505] 4278 | 4048 
|| 
| 
il } 
TABLE XXXII.—Mean Variations of the Vertical Component of Magnetic Force, after Eliminating 
the Secular Change, with reference to the Moon’s Age, Declination, and Distance from the Earth, 
for 1845. 
Variations Variations|| After | Variations} After | Variations || Before | Variations| Before | Variations 
Moon’s || of Ver- | Moon’s| of Ver- || Moon | of Ver- | Moon | of Ver- and of Ver- and 
Age. ||tical Com-| Age. | tical Com-||farthest| tical Com-/farthest| tical Com-|| after | tical Com-| after 
ponent. ponent. || North. | ponent. | North. | ponent. |Perigee. ponent. | Apogee, 
Day. 0-00 Day. 0-00 | Day, 0-00 Day. 0-00 | Day. 0-00 Day. 
15 0051 0 0052 | 0 0170 14 0170 7 0133 7 
16 | 0069 1 0061 | 1 0106 15 0132 6 0129 6 
17 0044 2 0100 | 2 0128 16 0160 5 0115 B) 
18 0068 3 0104 3 0000 17 0237 4 0117 4 
19 0109 | 4 0142 | 4 0065 18 0190 3 0101 3 
20 0101 5 0135 | 5 0123 | 19 0186 || 2 0159 2 
21 0045 6 0144 | 6 0152 20 0138 1 0138 1 
22 || 0077 7 0069 ve 0134 21 0198 || P 0130 A 
23 0103 8 0037 8 0161 22 0168 || 1 0168 1 
24. || 0069. | 9 0045 9. 0158 23 0089 2 0243 2 
25 || 0021 | 10 | 0089 || 10 | 0102 | 24 | 0136 3 0193 3 
26 || 0064 4" 11). (00695 1 <1 0166 25 0150 4 0152 4 
27 =|} +0000 12 | 0003 | 12 0152 26 0105 5 0166 5 
28 || 0029 | 13 0037 13. | 0160 27 0137 6 0142 6 
29 || 0025 | 14 0053 | | Nae 0063 | 76 
