EXTRA OBSERVATIONS OF MAGNETOMETERS, May 6. 1843. 63 
DECLINATION. BiFiwan. BALANCE, DECLINATION, BIFivar. BALANCE. 
| Ben, Min. Reading Min.| Reading || Min.} Reading eee Min. Reading Min.|} Reading || Min.| Reading 
yy of Reduced: of Cor- of Cor- of induced: of Cor- of Cor- 
| Obs. Obs.| rected. || Obs.| rected. Obs. Obs.| rected. || Obs.| rected. 
' 
| ad. h. m. | , m. Se. Div. m. Mic. Div. dh. m. 2 “ m. Se. Div. m. Mic. Div. 
: 6 10 24 370-7 May 6 11 | 37 | 25 34-85 || 37 226-6 r 
| 25 | 25 8-00! 27 344-6 28 196-1 38 221-2 38 465-1 
; 30 | 25 10-48 || 32 | out offiela.|] 33 126-0 39 | 25 26-89 || 39 227-8 
| 35 | 25 9-54 40 | 25 21-78 || 40 222.6 
t 41 | — 28-5 41 212.4 41 341-1 
| 43 | 25 18-32 42] 216-9 | 42] 311-0 
. 47 | 25 21-08 || 47 155-8 43 226-2 43 291-7 
ta 48 168-5 48 101-5 44 | 25 11-82)| 44 250-1 
49 185-2 45 | 25 9-05 || 45 268-8 
50 | 25 24-25 50 184-1 46 260-0 
51 199-1 47 256-0 
52 222.3 52 220-5 48 241-2 48 276-1 
} 53 234-3 ; 49 246:8 
\ 54 234-4 54 250-0 50 | 25 7-73|| 50 256-0 51 342-0 
} 7 55 | 25 21-04]) 55 221-8 52 271-5 
{ 56 236-6 || 56 274-5 53 294-0 | 53 288-0 
57 | 25 19-67 || 57 228-2 54 310-5 || 54 322-0 
’ 58 221-8 58 317-0 55 | 24 43-10] 55 342-4 
59 240-8 56 | 24 42-43 || 56 348-1 
lay 6 11 0 | 25 10-55 1 252-2 1 454-0 57 331-9 | 57 417-0 
: 2/25 7-14 2 263-0 - | 58 346-9 58 427-5 
3 248-2 3 487-0 59 | 24 32-97|| 59 348-9 
{ 4 228-7 May 6 12 0 | 24 24-67|| 0 364.2 
i 5 | 25 2-64] 5 203-5 1 | 24 20-54] 1 370-2 
6 204-3 2 | 24 18-94 2 354-6 
7 215-1 7 708-9 3 343-9 3 459-6 
8 235-1 8 7541 4 | 24 11-29 4 322-1 
9 257-7 9 803-0 , 5 | 24 4-92] 5 303-7 
10 | 25 16-97] 10 286-3 6 299.5 6 480-7 
11 309-7 11 860-1 7 | 23 58-05 7 296-2 
12 319-4 8 318-2 8 494-0 
13 310-5 13 903-9 9 | 23 52-13|| 9 333-9 
14 301-6 10 | 23 51-71)| 10 335-7 
15 | 25 29-14] 15 280-5 11 | 23 52-64)| 11 334-1 i 471-7 
16 248-2 || 16 864-1 12 346-4 
17 | 25 7-15 || 17 242-9 13 370-7 || 13 375-0 
f 18 208-7 18 940-2 14 | 24 2.39)) 14 372-6 
19 164-2 19 973-4 15 | 24 6-42|| 15 364-0 
20 | 25 20-03 || 20 89-0 16 373-2 | 16 275-0 
21 84-0 | 21 930-3 17 | 24 14-63 || 17 383-0 
22 105-2 || 22 911-0 18 372-1 18 233-7 
23 149.7 || 23 853-0 19 | 24 21-24]| 19 363-8 
24 | 24 59-14 || 24 169-4 20 | 24 27-36)) 20 357-1 || 21 201-2 
25 | 25 5-36] 25'| 188-3 22 374.4 
26 168-6 || 26 7828 23 376-4 | 23 236-0 
27 | 24 50-80 || 27 130-7 24 | 24 31-601} 24 379-6 
28 134-9 || 28 755-0 25 | 24 29.38 }| 25 389-0 
29 146-2 26 398-3 26 259-0 
7 30 | 25 0-60] 30 141-0 27 406-2 
31 167-3 28 420-7 || 28 260-5 
y 32 184-8 || 32 657-0 29 | 24 20-94) 29 424-2 
7 33 195-7 30 | 24 20-87|) 30 | 417-9 
is 34 | 25 33-27 || 34 186-1 31 409-2 || 31 222-0 
; 35 | 25 33-17|| 35 192.7 32 | 24 26-09] 32 409-9 
i 36 215-8 || 36 569-0 33 408-2 | 33 181-5 
Brrizar. k=0-0001205. BALANCE. k=0:000015 approximately. 
BIFILAR THERMOMETER. aqyon f 52%4 
BALANCE THERMOMETER. } et NTS Bets, { 54°-0" 
Ma 64102 45m, The scale of the Bifilar Magnetometer having gone beyond the field of the reading telescope, the torsion circle was 
ed from 287° 44’ to 291° 45’; the subsequent readings have been reduced so as to be comparable with those previous to the turning of 
sion circle,—(See Introduction.) 
