336 EXTRA OBSERVATIONS OF MAGNETOMETERS, SEPTEMBER 22, 1846. 
Mean DECLINATION. aoe ae Mean DECLINATION. Bam ee eek DECLINATION. 
Time. Time. 
Ca Min e Min. | Sc. Diy. |) Min. | Mic. Div. si h. Min a (s Min. | Se. Div. || Min. | Mic. Div. Min. a! 0 
22 0 || 40 | 25 19-21|| 42 | 571-3|| 43 | 636-9] 22 25 | 25 04-78|| 25 | 646-6|| 25 | 668-3 4 | 25 24-89 
|| 45 18-84 || 47 | 563-8|| 48 | 653-9 27 04-28 || 27 | 642-7|| 27 | 634-5 5 20-69 
| 50 15-61 | 52 | 577-7|| 53 | 692-1 29 07-34|| 29 | 640-0|| 29 | 617-2 6 15-58 
55 14-35 || 57 | 581-9|| 58 | 678.7 30 07-02|| 30 | 635-9|| 30 | 615-8 7 17-15 
22 1] Oo 15-41|| 2 | 591-2|) 3 | 664.6 32 06-53 || 32 | 629-1) 32 | 602.5 8 15-61 
10 13-46 || 12 | 628-9] 13 | 693-3 34 08-95 || 34 | 627-3|) 34 | 596-2 9 16-57 
15 08-99 | 17 | 680-0|| 18 | 779-9 35 09-96 || 35 | 626-5|) 35 | 599-3 10 19-44 
19 | 695-2 37 07-78 || 37 | 620-2]| 37 | 612-5 11 22.44 
|| 21 | 682-5 40 03-57 || 40 | 606-5|| 40 | 599-2 12 25-28 
| 20 02-79 || 22 | 677-9] 23 | 758-1 42 05-29] 42 | 599-1|| 42 | 581-9 15 19-91 
25 | 25 07-13|| 26 | 708-0|| 28 | 776-5 45 05-08 || 47 | 595-1]) 48 | 577-3 | 17 14-60 
30 | 24 57-76|| 32 | 735-2|| 33 | 698.4 50 06-26 || 52 | 607-0|| 53 | 574-4 20 06-59 
35 | 25 04-31|| 35 | 707-0 55 08-59 || 57 | 605-8] 58 | 572-5 22 05-55 
37 | 694-9|| 38 | 691-1] 22 41) O 11-74|| 2 | 624-1|| 3 | 607-5 25 02-45 
40 11-10|| 42 | 715-0|| 43 | 655-3 10 | 596-2 27 07-54 
| 45 17-63 || 47 | 692-5}| 48 | 703-2 11 11-44]| 11 | 662-6]) 11 | 589.2 30 10-63 
49 | 683-9 12 19-51|| 12 | 668-9 35 | 25 04.44 
| 50 09-56 || 52 | 676-5|| 53 | 644-7 13 25-56|| 13 | 660-9|| 13 | 612-9 40 | 24 58.99 
| 55 07-17 || 57 | 645-5 || 58 | 661-8 14 24.66 || 14 | 644-5 || 14 | 644-8 45 | 25 10-09 
22 2] 0 06-86|| 2 | 641-9|| 3 | 650-9 15 17-42|| 15 | 637-4|| 15 | 666-8 
5 01-78|| 7 | 652-5|| 8 | 629-8 16 11-03) 16 | 644-4|) 16 | 671-4 50 04-58 
10 14.33 || 12 | 658-0]} 13 | 716-8 17 11-30 || 17 | 670-8]| 17 | 672-4 
15 05-13 || 17 | 672-2|| 18 | 657-6 18 26-97 || 18 | 675-3|| 18 | 674-5 
20 17-36 || 22 | 663-7|| 23 | 759-4 19 31-28 || 19 | 651-1|/ 19 | 680-0 55 | 25 01-27 
25 05-45 || 27 | 645-1|| 28 | 673-0 20 32-69 || 20 | 640-0] 20 | 689.4 56 | 24 55-70 
30 17-12|| 32 | 671-7 21 30-87 || 21 | 639-8] 21 | 714-1 
35 09-56 || 36 | 726-6|) 36 | 817-1 22 25-29 || 22 | 626-5|| 22 | 747-0 0 | 24 45.40 
37 | 700-0]] 38 | 785-4 23 12-72] 23 | 632-6]| 23 | 767-8 
39 | 704-0 24 | 25 03-20] 24 | 635-8] 24 | 775-4 
40 03-40 || 41 | 706-0] 42 | 732.9 25 | 24 55-56|| 25 | 649-1] 25 | 772-0 | 4 | 25 24.49 
42 14-87 || 43 | 683-9]] 44 | 761-4 26 | 24 54-99|| 26 | 659-3] 26 | 766-0 5 37-33 
44 02-62 || 45 | 678-9|| 46 | 704-0 27 | 24 58-72|| 27 | 658.4|| 27 | 756-4 6 48-49 
45 01-02) 47 | 689-5 28 | 25 02-62|| 28 | 650-5 || 28 | 758-2 i 46-58 
47 04-17 |] 48 | 695-4|] 48 | 701-1 29 04-17 || 29 | 655-4 || 29 | 763-1 8 47-59 
49 | 700-0 30 07-24 || 30 | 658-5 |) 30 | 770-3 9 45-30 
50 | 25 06-39 50 | 731-3 31 09-86 || 31 | 659-9]) 31 | 774-3 | 10 42.61 
51 | 704-0] 51 | 733-0 32 13-72 || 32 | 652-4|| 32 | 771-9 11 38-69 
52 | 24 59-76|| 52 | 704-0] 53 | 688-4 33 13-90 || 33 | 639-5 || 33 | 763-0 12 36-69 
| 55 | 25 01-49|| 54 | 708-0|| 55 | 702-0 34 16-35 || 34 | 630-6|| 34 | 760-0 13 36-00 
| 56 | 708-0] 56 | 591-6 35 15-81|| 35 | 618-9] 35 | 748-1 14 36-37 
| 58 08-31 || 58 | 690-6|| 58 | 657-2 36 13-72|] 36 | 614-1]] 36 | 743-1 15 32.89 
| 59 | 680-5 37 10-16 || 37 | 612-2] 37 | 737-2 16 27-05 
22 3/1 0 01-14|) 0 | 668-9]) 0 | 684-0 38 02-52|| 38 | 614-0|| 38 | 728-8 17 19.37 
1 | 658-9 39 02-89 || 39 | 620-2|| 39 | 718-8 hats 13-76 
| 2 00-53|) 2 | 661-4|) 2 | 629-5 40 03-37 | 40 | 628-6]| 40 | 713-9 19 14-77 
3 | 669-0|| 3 | 603-0 41 03-37 || 41 | 632-3! 41 | 715-1 20 15-71 
5 | 13-66|| 5 | 674-9|| 5 | 564-6 45 14-33 || 45 | 639-7|| 45 | 754-8 21 15-64 
7 19-84|| 7 | 673-8|| 7 | 596-8 50 11-64|| 50 | 621-3]) 50 | 757-6 22 14-50 
8 | 672-4|| 8 | 533-8 53 13-96 || 53 | 665-7 || 53 | 762-8 23 13-99 
9 | 12-45|| 9 | 669-6) 9 | 559-4 54 | 694-0 24 15-64 
10 11-10|| 10 | 666-5|| 10 | 663-1 55 33-70 || 55 | 700-0|| 55 | 750-5 | 25 14.23 
12 08-88 || 12 | 673-4|| 12 | 685-4 56 47-42|| 56 | 680-0|| 56 | 755-5 26 12-85 
| 14 09-05 || 14 | 686-8 || 14 | 700-0 563 51-11 27 23-88 
| 15 | 09-62] 15 | 686-4|| 15 | 704-2 57 36-59 || 57 | 656-9|| 57 | 757-2 28 17-58 
| 17 00-98 || 17 | 672-2|| 17 | 677-8 58 23-54 || 58 | 666-8 || 58 | 774-2 29 21-59 
18 | 649-9 59 21-93 || 59 | 689-7 | 59 | 773-9 30 20-42 
| 19 02-99 || 19 | 668-0|| 19 | 620-6] 22 5 || O 22.20) 0 | 686-5]| 0 | 763-0 31 19-41 
| 20 07-96 || 20 | 667-7|| 20 | 596-7 1 21-12]) 1 | 679-8] 1 | 736-6 32 15-56 
22 14-33 || 22 | 662-0|| 22 | 608-9 2 23-54|| 2] 669-8] 2 | 729-2 33 14-58 
| 24 09-89! 24 | 650-0!) 24 | 662-4 3 24.39! 3 | 677-411 3 | 731-3 __ | 34 19-48 
BaLanceE. k=0-000010. 
BIFitar. k=0:000135. 
into view at 52™ 10s, 
Sept. 224 1» 26m, Bifilar magnet out of the field of the reading telescope ; highest estimated reading perhaps 740 se. div. 
Sept. 22454 46m, The bifilar magnet went rapidly out of sight ; highest estimated reading perhaps 760 sc. div. about 51™, 
The scale came 
; 
a 
