fej4a,}h, 
ExtTRA OBSERVATIONS OF MAGNETOMETERS, APRIL 30—JuLy 24, 1845. 107 
NCE Gott. BIFILAR BALANCE Gott. BIFILAR BALANCE 
aa | Mean DECHINATION. Corrected. Corrected. Mean DECLINATION. Corrected. Comracten 
Time. Time. 
a. oh. |)Min.| © ¢ Min. | Se. Div. || Min. | Mic. Div.f d. oh. |] Min.] ° Min. | Se. Diy. ||Min. |Mic. Div. 
18 14 || 35 | 25 03-67|| 37 | 530-0]| 38 | 385-9] 4 12 || 10 | 25 06-73]! 12 | 541-1] 13 | 473-1 
45 03-02 || 47 | 531-9|| 48 | 398-0 20 08-28 || 22 | 541-6 || 23 | 472-8 
18 15 0 09-32 || 2 | 533-4 3 | 403-5 40 10-20}) 42 | 542-8 || 43 | 470-2 
15 17-60 || 17 | 537-9] 18 | 395-5] 4 13 0 09-46 || 2 | 541-1 3 | 469-7 
25 17-94 || 27 | 542-1 || 28 | 378-3 }———__|_|____—___|—_- — = 
Bb) 17-60 || 37 | 546-9|| 38 | 367-9] 7 12 0 | 25 11-14]; 2} 546-0 3 | 454-5 
45 17-02 || 47 | 538-6 |] 48 | 364-2 10 13-32 || 12 | 546-0]| 13 | 450-7 
18 16 0 20-62 |} 2} 508-3)| 3 | 363-7 20 12-78 || 22 | 547-5 || 23 | 442.5 
10 25-06 || 12 | 502-6 || 13 | 351-2 35 14-06 || 37 | 548-0|| 38 | 432.7 
20 27-75 || 22 | 506-0 || 23 | 319-6 40 14-85 || 42 | 548-1]! 43 | 428-8 
25 23-19 || 27 | 513-7 || 28 | 303-8 45 15-78 || 47 | 544-4 || 48 | 425-7 
30 18-61 || 32 | 514-1 || 33 | 287-9 50 16-41 || 52 | 542-7 || 53 | 426-2 
35 13-27 || 37 | 520-4 |) 38 | 287-6 55 17-53 || 57 | 540-9 || 58 | 417-4 
40 10-60 || 42 | 521-3] 43 | 284-7] 7 13 0 18-50 |; 2 | 540-0 3 | 412-8 
45 09-82 || 47 | 520-8 || 48 | 291-1 5 16-92], 7 | 539-2]| 8 | 408-0 
18 17 0 10-11 2 | 526-7|| 3 | 379-0 10 16-01 || 12 | 537-5|| 13 | 405-4 
15 08-19 || 17 | 524-1|| 18 | 369-0 20 13-12 || 22 | 537-9]| 23 | 401-7 
45 07-69 || 47 | 528-3| 48 | 432-3 46 08-48 || 47 | 539-0 || 48 | 409-5 
18 18 0 08-14/| 2 527-7 | 3 | 451-1] 7 14 0 08-66 || 2 | 539-4 3 | 419-7 
27 | 523-0 || 28 | 477-2 |———}—-—_|_— —_|— 
18 19 8 08-39 || 9 | 522-6) 10 | 495-77 8 8 0 | 25 11-46 2 | 552-8 3 | 496-2 
20 08-11 || 22 | 523-0]) 23 | 497-9 10 12-65 || 12 | 542-7 || 13 | 504-8 
18 20 0 08-19||} 2 | 525-6]} 3 | 505-1 15 12-69 | 17 | 538-0]| 18 | 507-2 
—||——_ — 25 09-62 || 27 | 545°8 || 28 | 506-7 
20 13 25 07-67 || 2 | 535-7|| 3 | 495-6 30 09-02) 32 | 550-8]| 33 | 505-5 
31 06-66 || 32 | 535-2) 33 | 490-3 40 08-85 | 42 | 552-2]| 43 | 503-7 
20 14 07-67 || 2 | 534-4] 3 | 482-37 8 9 0 09-51 2) 552.3 3 | 500-1 
22 10 0 | 25 02-:99|| 2] 538-6) 3 | 534-8] 8 17 0 | 25 16-82), 2 | 526-3 3 | 472-1 
10 03-60 || 12 | 542-3) 13 | 529-6 10 18-87 | 12 | 527-3]| 13 | 467-0 
20 05-99 || 22 | 540-9} 23 | 527-9 15 20-35 | 17 | 527-9}! 18 460-5 
22 11 0 10-43 2 | 540-0|| 3 | 522-0 20 20-52 |, 22 | 529.9}| 23 | 454-8 
= — 30 19-84 | 32 | 531-3] 33 | 442-7 
29 13 0 | 25 13-56], 2 | 544-8]| 3 | 497.3 40 18-34 42 | 533-0]| 43 | 435-2 
35 10-18 || 37 | 545-2|| 38 | 492-97 8 18 0 15-34 ]) 2 | 536-7 3 | 418-3 
29 14 0 09-89 || 2 | 544-5|| 3 | 491-8 32 10-23 | 33 | 541-2]| 34 | 423-0 
| — 8 19 0 05-99}, 2] 539-5 3 | 436-1 
cat O | 25 22-15 2 | 550-3 3 | 497-4 -—|— —| —_| ——__ || —— 
30 22-27 || 32 | 551-9|| 33 | 500-3 L7Gr2 0 | 25 21-23 2 | 540-6 3 | 467-2 
4 2 0 15-12], 2 | 535-4|) 3 | 511-1 40 21-26 |, 42 | 541-2]| 43 | 468-5 
4 4 0 19-51 2) 533-7] 3 | 553-1) 17 3 0 20-89] 2) 543-0 3 | 467-7 
. 15 20-58 || 17 | 551-1 |} 18 | 548-5 
25 19-01 || 27 | 562.1] 28 | 547-1] 17 8 0 |} 25 11-12}; 2) 554-2]) 3 | 484-2 
35 18-13 || 37 | 562-7 || 38 | 550-9 31 | 07-87 || 32 | 554-3 || 33 | 486-4 
45 17-83 || 47 | 557-7|| 48 | 559-7] 17. 9 0 08-80|| 2 | 553-7 3 | 486-2 
4 5] 0 19-12|| 2] 547-9] 3 | 571-8 
30 15-11|| 32 | 551-9]] 33 | 577-2} 17 12 0 | 25 07-00 | 2 | 544-5 3 | 469-0 
45 14-64 || 47 | 552-1}| 48 | 577-8} 30 08-14 || 32 | 543-8 |) 33 | 468-8 
c 4 6 0 15-31 2) 554-4)) 3 | 580-0] 17 13 0 08-32 2 | 542-7 3 | 469-8 
7-9 8 13 0 | 25 07-79)|| 2] 539-9] 3 | 479-59 18 13 0 | 25 08-38] 2 | 543-2] 3 | 439-2 
8 20 04-98 || 22 | 539-8 |) 23 | 473-6 15 06-06 | 17 | 539-8} 18 | 444-5 
0 3 04-76 || 32 | 538-9}) 33 | 472-1 20 05-42 || 22 | 538-5 || 23 | 445-8 
: 8 14 0 05-22|| 2] 531-0|| 3 | 475-69 18 14 0 07-38 |, 2 | 537-5 3 | 452.3 
6 10 8 0 | 25 07-05|| 2 | 560-1 3 | 536-6] 18 21 3 | 2512-04] 4 | 529.2 5 | 470-5 
9 15 09-20 || 17 | 557-6|| 18 | 540-3 15 13-52] 17 | 530-5 || 18 | 467-1 
7 30 10-20 || 32 | 551-7 || 33 | 540-8 32 12-87| 33 | 528-1 || 34 | 463-5 
3 10 9 0 11-34]| 2] 547-9]| 3 | 536-8] 18 22 0 11-03 2 | 529-4 3 | 457-1 
8 377-8] t4 12 0 | 25 04-82|| 2] 548-0) 3 | 471-1] 24 11 0 | 25 08-93) 2 | 534-5 3 | 481-1 
Birizar. k=0:000140. BaLance. k—0:000010. 
t July 44 12», 
Ly 7a 8 0™. The declination and bifilar magnets vibrating slightly and irregularly ; the declination changing its mean position to a small 
ent ; it has gradually gone eastward till 30™ ; the bifilar has been nearly stationary. 
