ExtTrA OBSERVATIONS OF MAGNETOMETERS, JULY 25—Auveust 8. 1843. 67 
E> DECLINATION. BIriILar. BALANCE. DECLINATION, BIFILAR. BALANCE. 
eens, Min. Reading Min.| Reading || Min.) Reading Hear Min. Reading Min.| Reading || Min.| Reading | 
of | Reduced. || f Cor- of Cor- of | Reduced. || of Cor- of Cor- 
Obs. Obs.} rected. || Obs.} rected. Obs. Obs.} rected. || Obs.| rected. 
a oh m. Ces m. Se. Div. m. Mie. Div. dh. m. : bs m. Se. Div. mm, Mic. Div. 
fuly 25 5 1) 562-1 1| 851-0] July 25 10 | 95 | 25 13-51] 56 | 478-4 
; 2 25 52-70] 2] 556-0 57 | 484-7 | 58 | 602-7 
i 3 552-2 3 877-4 59 488-0 
| 4 50-05 4 553-6 July 25 11 0 12-60 2 486-6 o) 649.3 
| 5 48-33 5 554-4 4 481-9 
; 6 | 556-3 6 | 891-3 5 11-77|| 7 | 480-8 || 8| 671-6 
{ 7 46-76 a 557-0 9 483-5 
| 8 558-4 8 895-6 10 10-55 || 12 487-0 || 13 679-3 
| 10 44-43|| 10 | 559-3 15 14-03] 17 | 484-6 | 18 | 671-6 
| 12 40-53 || 12 559-9 20 16-95 || 22 482-8 || 23 674-5 
| 13 561-1 13 900-5 25 19-27|| 27 | 482-0 || 28 676-9 
15 39-52 || 15 568-4 || 18 905-7 40 20-68 || 42 479-0 || 43 667-8 
| 20 37-15 || 22 568-3 || 23 904-8 50 21-88) 52 484.9 || 53 667-6 
a 25 34-12 | 27 566-7 28 920-2 | July 25 18 0 15-03 2 466-0 3 642-9 
Le. 30 29-38 || 32 555-7 || 33 908-5 20 15-19 || 22 485-9 || 23 640-7 
| 3 35 32-511|| 37 553-6 38 907-0 30 15-32 || 32 484-1 33 639-0 
| 40 37-61 || 42 524-6 43 soe i a 
43 523-8 Aug. a 4 0 | 25 29-08 2 535-3 3 604-0 
44 29.31|| 44] 524.3 20 27-22) 22 524-9 || 23 615-6 
a 45 28-35 | 45 526-6 Aug. 3 6 0 21-08|) 2 512-7 3 637-0 
46 | 525-9 | 46] 862-3 aa 
47| 525-9 | 48| 8449 | Aug. 3 22 0 | 25 20-82] 2) 466-7 3 625-5 
50 30-40|| 52 512-9 || 53 817:5 35 26-:19|| 37 | 474-5 || 38 619-3 
\ 55 31-73 | 57 512-8 || 58 811-3 | Aug. 4 0 0 31-43] 2 490-3 3 601-8 
uly 25 6 0 31-96] 2 519-4 3 812-8 47 34-90 | 48 508-0 || 49 608-0 
5 30-741 71 520-8 g| g12-7 | Aug. 4 1 | 20 29-38 || 22 | 522-2 || 23 663-8 
15 25-58 || 17 530-6 18 798-9 45 31-36 | 47 512-4 48 660-1 
20 28.27|| 22 | 530-4 | 93 | 7846 | Aug. 4 2 0 29-42|| 2] 512-9 3 | 682-0 
25 30-42] 27 | 526-5 | 98 | 789-1 | Aug. 4 4 0 32-78) 2 519-3 3 | 685-9 
40 22.38|| 42 | 520-7 | 43 | 7849 | Aug. 4 5 || 20 21-24 || 22 536-4 || 23 747-1 
45 19-63 || 47 510-0- || 48 779.6 30 24-37 || 32 518-4 || 33 776-5 
50 " 90.341 52 | 518-0 | 53 | 769-8 35 21-95|| 37 | 518-4 || 38 | 782-2 
4 55 29.53 || 57 518-3 || 58 771-7 40 19-26) 42 518-7 || 43] 784-5 
uly 25 8 0 19-63|| 2 508-0 3 736-0 45 18-48 | 47 522-5 || 48 789-6 
uly 25 10 | 0 20-10) 2) 474-3 3| 663-7 50 15-83] 52 | 516-0 || 53 » 
10 18-97] 12 | 479-7 || 13 658-8 55 11-24] 57 | 532-6 || 58 778-6 
15 21-91| 17 | 469-3 | 18 | 643-1 | Aug. 4 6] 0 13-68|| 2] 537.3 3 | 772.5 
20 21-28 || 21 463-5 5 17-15 ti 532-2 8 767-0 
22! 460-2 | 23] 826-6 10 19-37] 12 | 528-6 || 13 | .759-8 
25 20-07 || 26 462-3 15 22-02] 17 524-3 18 752-0 
27 462-1 || 28 611-9 25 24:37 || 27 516-8 || 28 738-1 
29 | 445-9 Aug. 4 8] 0 21-24) 2) 517-4 3 | 679-1 
30 19-80] 31 | 448-2 SSS S| 
32 | 442-1 || 33 | 562-3 | Aug. 8 18 0 | 25 37-51] 2] 461-8 3 | 475.2 
34 437-5 10 38-08 || 12 466-6 13 462-9 
35 20-28] 36 | 425.7 15 42-41] 17 | 456-6 || 18 | 451-6 
37 431-9 38 520-6 20 43-74 || 21 468-0 
39 | 457-1 22 | 472-3 | 23 448.7 
r. 40 17-83 || 41 465-3 24 476-7 
a 42 | 470-2 || 43] 566-7 25 43-49 || 26 | 480-3 
44 | 476-5 27 | 481-8 || 28] 447.6 
45 13-71 || 47 | 486-6 | 48 | 576-1 30 43-80] 31 487-8 
49 476-3 32 490-5 ae 442-0 
50 13-44|| 52 | 460-2 || 53 | 567-0 35 43-12 36 | 496.2 
54 | 467-2 37 | 498-7 || 38 | 437-9 
Biritar. k=0:0001205, Bawance. k=0-:000015 approximately. 
64-4, 
6472 
Biritar THERMOMETER. } July 25 11%, { 
\ BALANCE THERMOMETER. 
