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DAILY OBSERVATIONS OF MAGNETOMETERS DURING MArcH AND APRIL, 1855. 43 
Sam 11 aM. 2 PM. 5 PM. Temperature of Bifilar and 
i Balance. 
| Bifil. | Balee. |! Decin,| Bifil. Balce. || Decin,| Bifil. | Balce.|) pegj,| Bifil. | Balce. 
Cor- | Cor- 24° + Cor- | Cor- 24° 4. Cor- | Cor- 24° 4. Cor- | Cor- || 8 A.M. |} ll a.m.} 2 p.m. ] 5 P.M. 
rected.| rected. * Irected.|rected. rected. |rected. rected.|rected, 
sc. div. mic. div 4 sc. diy.|mic, div]} ” ‘ii se. fae biiayaie iG se. div. |mic. div ¢ 3 2 s 
640-2) —3-0|| 15-58] 638-7} 0-3]| 34-18] 633-3 1-2} 7-25} 650-1] 12-8) 38-7 | 39-7 | 41-6 | 42-4 
646-2} —8-0|| 6-92) 631-2)/—10-8)| 12-98) 647-5 1-0|| 6-72) 647-8) 17-8|| 39-8 | 40-4 | 43-0 | 45.4 
655-6} —7-9]| 7-99] 635-3) — 5-1|| 12-57| 648-4) —3-2|| 7-39|}654-0) 4.1]| 40-5 39-7 | 40-5 | 41.3 
653-9| —9-8]| 9-06) 646-5) —1-1|) 13-77] 651-3) —3-7)| 9-27) 653-9) 3-1] 39-8 | 40-7 | 41-2 | 43.2 
648-4| — 3-3] 8-54) 638-6}  5-6|| 12-02] 653-7) —1-1]| 8-27] 657-5] 10-2/| 37-9 37-6 | 40-9 | 45-5 
655-5) —6-6|| 8-27) 633-2) — 3-9)! 12-22) 652.6 1-5|| 8-27) 658-5) 14-1]| 38-1 37-5 38-1 41:3 
571-7| —1-0]| 6-52] 633-1] —0-8]| 13-04! 647-1 TEAM) Decaod-|) dorcel donee S77 37-7 40-0 | «-.00- 
656-2|—10-7|| 5-91) 638-9] — 9-4|| 14-71] 642.8] — 2-1|| 23-34] 666-2} 33-0|| 37-1 35-9 | 37:0 | 38-5 
L| 646-0/—12-0|| 9-00) 633-3) — 3-8]| 17-80] 643-8] — 4-9] 10-28] 653-6] 10-2)| 35-1 34-7 | 34-6 | 34.7 
655-7| —6-0)] 11-49] 645-3|—22-2)| 22.51] 657-8)—17-6]| ---22+ | seeeee | ee eee 33-2 | 34-7 | 39-1 | --s... 
638-8/—10-7|| 6-17) 634-5} 12-1] 12-36) 645-8 9-0] 11-75] 657-5) 28-6) 39-4 | 38-9 | 39-1 39-5 
647-0|—14-1]| 11-83] 636-7| — 2-6|| 12-421 652-4) 0-5)! 7-04) 651-5} 17-9) 36-8 | 37-2 | 40-8 | 41-9 
644-5} —0-5/| 10-40] 638-4) —6-8]| 16-40] 644-2) 10-3]/ 12-36] 649-8} 19-1|| 35-8 | 35-2 | 36-5 37-6 
654-3] —3-7]| 14-99] 632-2] —2-Q||...... |... SEC Sepaceh Il hip Gacu eceeDe Meee aloe Gel DG beoescgehli ewer 
648-8) —4-6|| 7-66] 640-5) —1-4|| 9.14) 645.8] —0-7|| 14-32) 670-8} —1-1]| 37-5 | 37-5 39-4 | 41-1 
644-2|/—10-4|| 12-83] 635-1) —9-5!| 16-61) 642-4 5-7|| 10-96] 656-6] 15-8|| 38-7 | 39-0 | 41-3 | 42-9 
641-9/—12-0]} 8-94) 624-9|—11-5|| 16-46) 645-5] — 3-0)/ 12-63] 649-5} 21-0)) 38-2 | 37-9 38-0 | 38-4 
651-7} —3-4/| 10-61] 640-4) — 9-9] 15.94] 643-4/—11-3]| 11-63] 660-6) 0-7|) 36-3 37:0 | 38-5 | 38-7 
654-2) —7-5|| 7-99] 643-5| — 6-7] 16-40] 649-8] — 9-2|| 12-36) 657-0 1-4|| 34-3 34-7 | 36-0 37-1 
650-7|/—12-2)| 12-98) 643-3}—11-0]| 19-70) 656-5|--18-1|] 14-04] 663-4) 7-6]| 32-7 | 32:6 | 36-1 38:7 
649-3} —7-1|| 6-98] 639-6] 15-2) 16-34] 644-3/—11-6]| 6-98] 645-8} 16-8]} 36-1 39-2 | 39-7 | 42-9 
646-6) —1-2|| 8-54) 638.5) —7-5|| 15-11} 647-3] — 5-3|| 10-28) 659-6) —3-0]| 39-1 39:0 | 40-6 | 41-4 
649-5} —7-5|| 11-69] 633-1|—13-2|| 13-77) 649-5|—21-1]| 8-27) 650-1) 14-3]| 37-8 38-4 | 39-6 | 41-4 
645-9} —6-6]| 9-21} 633-9|—11-4|| 15.58] 647-7|—-18-5]| 9-88] 656-7} —9-1]| 35-5 | 35-5 39-4 ] 43-2 
651-3}—11-8}]| 9-41) 638-8|/—12-7|| 17-34] 642-6|—14-0|| 12-16) 652-9) 6-8] 38-1 38-1 | 40-3 | 42-0 
653-2|—18-4)||  9-27| 637-8|/—11-6]| 14.44] 645-3|}—27-1|| 16-67) 654-1/-19-.6]} 38-2 | 39-1 42-6 | 45-1 
651-5|—12-6]| 7-12) 636-2/—20-6]| 15-05] 649-1/—26-6}| 10-00) 659-8) — 8-9]| 37-5 | 36-9 | 40.3 | 43.7 
656-1|—24-1|| 8-74) 642-6|—25-7|| 18.68] 652-0|—27-4|| 14-99] 669-6/—13-7|| 38-5 39-1 40-3 | 42-0 
631-1|—35-7]| 10-00} 643-3|—33-5]| 16.46] 656-6|—27-4|| 20-17| 660-0} — 7-7|| 36:6 | 36-0 | 40-0 | 45.4 
639-9|—27-5|| 13-92) 619-6} —3-5]| 17-40] 644-5 3-1|| 14-71] 663-7} 20-0]) 41-3 | 42-4 | 47-0 | 51-2 
642-1) — 8-5]! 11-75) 625-3) —4-2/| 14.71] 649-8}  4-9]) 11-75} 646-1} 29-1]) 48-3 | 49.1 53-7 55-1 
643-9] —9-5|| 9-06) 635-7) —7-8|] 15-05] 646-1/—10-8]| 11-08] 656-0} 6-9]| 50-1 49:8 50:5 | 51-3 
650-2} — 3-8]| 9-61} 635-4} 0-5)| 15-38) 656-1} — 5-2)| 12-50) 654-2) 14-3)]} 49-1 50:3 53:9 | 56-2 
646-8] —3-8]| 8-13) 638-1} —4-1]| 14-71] 646-4) — 7-6]! 10-28} 658-9] 0-4)| 47-6 | 47-9 | 49-6 | 50-6 
seeeee | seers |] 6-25] 637-0] —9-4]| 14.99] 645-0] -13-7]| 11-75) 658-7] — 2-6]| ---+-- 42-3 | 44:0 | 47-6 
651-1] —4-7|| 8-74) 637-2 1-0|| 13-77] 649-3/—14-5]| 12-10] 655-7) —6-8]| 44.8 | 45-7 51-3 56-9 
642-9} —7-0|| 8-66] 638-7} —9-5)| 14-04] 650-1/—12-9]| 10-28] 653-9} —6-3]| 48-0 | 48-3 53-5 55-7 
648-3) —6-7)| 10-14) 643-8/—14-8]| 15-73] 648-3|—12-8]] 11-16] 667-1] 45-2/| 50-5 50-4 50-9 51-4 
648-7} —5-1]| 8-60} 639-8|—11-5|| 14-71| 654-4|—24-0]| 7-87| 659-8} 46-0]| 43-3 | 44-2 | 50-6 54-3 
647-8) —0-2|| 6-25) 634-5) —7-4|| 14.24| 647-5) — 7-5]| 10-34] 659-5) —4-1]| 48-8 | 49-1 50:5 52-3 
641-5) —2-7|| 8-94! 639-1) —1-2|| 15-32] 662-4] —8-9]| 12-69] 654-7) 8-0]] 44-6 | 46-8 | 50-5 51-5 







