in a magnetized needle by an iron shell , &c. 285 
Situation 
of 
Deviations ; 
ball 10 inches above. 
Deviations; 
ball on the plane of the table. 
Deviations ; 
ball 10 inches helow. 
compass. 
Needle 
Needle 
Needle 
Needle 
Needle 
Needle 
Needle 
Needle 
Needle 
No. 1, 
No. 2 . 
No. 3 . 
No. 1. 
No. 2 . 
No. 3 . 
No. 1. 
No. 2 . 
No. 3 . 
N 20° E 
1° 
3 ° 
z l° 
7 l 
10J 
4 s 
H 
22 
4 
N 40 E 
2I-| 
2 5 l 
12 h 
l6 
8 
21 
29 
IO 
N 60 E 
30 
3 6 2 
22 
* 3 l 
9 l 
2? 
3 ° 
2i l 
N 80 E 
34 § 
43 i 
27 
Si 
7 l 
32 | 
28 
3 ll 
S 80 E 
34 
4 i 
3°2 
3 l 
Si 
9 
34 
3 °i 
43 
S 60 E 
2 7 i 
22 
31 
12 
10 
H 
3 °| 
2I I 
35 
S 40 E 
201 
9 \ 
28^ 
l 3 
8 
16 
22 
! s! 
26 
S 20 E 
I2| 
4 
221 
8 
4 1 
11 
S 20 W 
ll S 
3 i 
2l| 
7 l 
4 
9 \ 
.. . . ... . 
.. . . 
n, n rj 
S 40 W 
20 
9 i 
28 
>3 
7l 
16 
21 
J 5 
26 
S 60 W 
261 
21 
291 
9 l 
I 5 
3 i 
21 
34 ! 
S 80 W 
33 
39 
2 9 
4 
7 
z h 
34 ! 
2 9 i 
43 
N 80 W 
34 
43 ! 
3 °h 
33 
2 9 
39 
N 60 W 
30 
36 
22 
io| 
12 
8| 
26 
29 
21 
N 40 W 
21 
2 52 
*5 
is! 
7 i 
20 
28 
9 i 
N 20 W 
7 i 
9 l 
3 l 
2I £ 
35 
