Horizontal Component of Magnetic Force. 



359 



TABLE XXIV. — Diurnal Range of the Horizontal Component of Magnetic Force for each Civil Day, 

 as deduced from the Hourly Observations, with the Mean for each Week in 1844. 



Civil 

 Day. 



Jan. 



Feb. 



March. 



April. 



May. 



June. 



July. 



Aug. 



Sept. 



Oct. 



Nov. 



Dec. 





0-0 



o-o 



0-0 



o-o 



0-0 



0-0 



00 



0-0 



o-o 



0-0 



00 



0-0 



1 



0214 



0605 



0213 



0476 



0651 



0374 



0405 



0788 



[0468] 



1273 



0266 



[0220] 



2 



0323 



0707 



0650 



0498 



0526 



[0347] 



0335 



0692 



0414 



0332 



0319 



0144 



3 



0262 



0423 



[0517] 



0834 



0554 



0350 



0361 



0521 



0372 



0290 



[0251] 



0162 



4 



0221 



[0511] 



0426 



0372 



0396 



0260 



0347 



[0494] 



0412 



0293 



0224 



0330 



5 



0330 



0318 



0745 



0244 



[0469] 



0417 



0350 



0395 



0260 



0238 



0144 



0231 



6 



0529 



0679 



0645 



0427 



0350 



0360 



0424 



0354 



0342 



[0288] 



0228 



0179 



7 



[0269] 



0337 



1037 



[0349] 



0336 



0307 



[0442] 



0214 



0423 



0262 



0151 



0105 



8 



0143 



0245 



0518 



0315 



0654 



0396 



0694 



0276 



[0325] 



0448 



0213 



[0150] 



9 



0176 



0210 



0582 



0353 



0444 



[0364] 



0494 



0879 



0329 



0204 



0186 



0109 



10 



0210 



0213 



[0496] 



0381 



0297 



0428 



0343 



0606 



0253 



0211 



[0210] 



0157 



11 



0204 



[0181] 



0230 



0224 



0364 



0402 



0430 



[0423] 



0343 



0245 



0314 



0120 



12 



0230 



0141 



0344 



0214 



[0421] 



0291 



0403 



0323 



0325 



0256 



0244 



0105 



13 



0091 



0168 



0260 



0230 



0326 



0288 • 



0364 



0213 



0384 



[0230] 



0154 



0123 



14 



[0157] 



0104 



0297 



[0517] 



0459 



0245 



[0433] 



0239 



0419 



0214 



0210 



0421 



15 



0123 



0155 



0150 



0343 



0640 



0400 



0489 



0351 



[0375] 



0192 



0169 



[0238] 



16 



0148 



0123 



0199 



0197 



0400 



[0377] 



0399 



0484 



0344 



0256 



1400 



0431 



17 



0141 



0322 



[0315] 



1894 



0295 



0440 



0510 



0482 



0399 



0244 



[0463] 



0105 



18 



0102 



[0158] 



0311 



0725 



0361 



0554 



0454 



[0407] 



0382 



0256 



0416 



0244 



19 



0126 



0115 



0715 



0392 



[0381] 



0329 



0518 



0347 



0385 



0304 



0400 



0326 



20 



0087 



0099 



0223 



0342 



0295 



0469' 



0389 



0399 



0606 



[0441] 



0186 



0636 



21 



[0123] 



0139 



0238 



[0420] 



0392 



0448 



[0367] 



0385 



0330 



1334 



0179 



0343 



22 



0186 



0245 



0297 



0351 



0538 



0270 



0321 



0521 



[0379] 



0256 



1008 



[0279] 



23 



0134 



0088 



0325 



0347 



0889 



[0363] 



0227 



0927 



0447 



0252 



0599 



0130 



24 



0105 



0123 



[0269] 



0361 



0546 



0284 



0294 



0384 



0238 



0195 



[0378] 



0111 



25 



0263 



[0225] 



0259 



0848 



0491 



0314 



0399 



[0479] 



0269 



0402 



0192 



0130 



26 



0136 



0122 



0263 



0847 



[0538] 



0388 



0486 



0316 



0806 



0931 



0113 



0228 



27 



0190 



0154 



0228 



0903 



0511 



0307 



0601 



0350 



0750 



[0381] 



0178 



0204 



28 



[0183] 



0617 



0417 



[0683] 



0421 



0367 



[0504] 



0379 



0242 



0284 



0385 



0281 



29 



0140 



0424 



1162 



0440 



0368 



0588 



0428 



0455 



[0662] 



0221 



0188 



[0342] 



30 



0195 





2212 



0409 



0336 



[0393] 



0427 



0638 



0568 



0252 



0109 



0769 



31 



0181 





[0934] 





0350 





0682 



0515 





0325 





0413 



TABLE XXV. — Means of the Diurnal Ranges of the Horizontal Component of Magnetic Force, with 

 reference to the Moon's Age, Declination, and Distance from the Earth, for 1844. 











After 





After 





Before 





Before 





Moon's 



Mean 



Moon's 



Mean 



Moon 



Mean 



Moon 



Mean 



and 



Mean 



and 



Mean 



Age. 



Range. 



Age. 



Range. 



farthest 

 North. 



Range. 



farthest 

 North. 



Range. 



after 

 Perigee. 



Range. 



after 

 Apogee. 



Range. 



Dav. 



O'OO 



Day. 



0-00 



Day. 



0-00 



Day. 



0-00 



Day. 



0-00 



Day. 



o-oo 



15 



4690 







3982 







3315 



14 



3644 



7 



4414 



7 



3871 



16 



47*60 



1 



3587 



1 



3392 



15 



3136 



6 



3956 



6 



3112 



17 



4498 



2 



3149 



2 



3838 



16 



2925 



5 



5836 



5 



3846 



18 



4699 



3 



2761 



3 



4001 



17 



3800 



4 



3973 



4 



3995 



19 



4325 



4 



3126 



4 



4738 



18 



3517 



3 



3544 



3 



4338 



20 



3420 



5 



3197 



5 



5348 



19 



3944 



2 



3409 



2 



5376 



21 



3514 



6 



4326 



6 



4292 



20 



3682 



1 



3818 



1 



3774 



22 



3253 



7 



3442 



7 



4248 



21 



3962 



P 



3733 



A 



3464 



23 



2915 



8 



3647 



8 



3804 



22 



3402 



1 



3673 



1 



2564 



24 



2827 



9 



4083 



9 



4109 



23 



5391 



2 



3651 



2 



3268 



25 



3275 



10 



4987 



10 



3222 



24 



4894 



3 



3138 



3 



3297 



26 



2847 



11 



4729 



11 



3047 



25 



3423 



4 



2948 



4 



3260 



27 



2722 



12 



5449 



12 



3226 



26 



3538 



5 



4159 



5 



3710 



28 



2900 



13 



4765 



13 



2963 



27 



3095 



6 



3694 



6 



4392 



29 



2738 



14 



4681 











7 



3953 



7 



4843 



Table XXV. has been formed from Table XXIV. in the manner described for Table II. 



