AjirIb fIrw.ritH-rt \iy turnh m«Ki>BHr p./U 
from triio nonti, rerlur^.d ioUr tim*. 
[To face p, 336. 
b 
o 
1 
a 
3 
4 
5 
6 
7 
8 
9 
10 
11 
12 
>3 
H 
>5 
16 
>7 
18 
»9 
20 
21 
22 
23 
24 
Latitude 64® 28' N, variation 36® 24' E, the same 
as at Fort Enterprise in 1821. 
Latitude 51° 30' N, variation 19° 
in London in 1759. 
W, the same as 
Angle between the magnetic poles. 
Angle between the magnetic poles. 
0 
0 
170° 
130° 
170° 
Heicht of 
the needle’s centre 
Heisht of the needle’s centre 
Heiglit of the needle’s centre 
Height of tlie needle’s centre 
above the centre of the circle 
above tlie centre of the circle 
above the centre of the circle 
above tlie centre of the circle 
described by the poles. 
described by the poles. 
described by the poles. 
described by the poles. 
Inches 
Inches ’ 
Inches 
Inches 
Inches 
Inches 
Inches 
Inches 
inches 
Inches 
Inches 
Indies 
12'25 
10*25 
8*25 
12 *25 
10*25 
8*25 
12*25 
10*25 
8*25 
12*25 
10*25 
8*25 
Deviation. 1 
Deviation. 
Deviation. 
Deviation. 
Deviation. 
Deviation. 
Deviation. 
Deviation. 
Deviation. 
Deviation. 
Deviation. 
Deviation. 
0 t 
0 / 
0 t 
d / 
0 / 
0 / 
0 / 
0 / 
0 / 
0 , 
0 ! 
0 / 
0 13 w 
0 I5W 
0 3SW 
I 45W 
I 55W 
2 40W 
2 30 E 
3 40 E 
4 20 E 
2 35 E 
3 50E 
4 50 E 
0 15 E 
0 30 E 
0 20 E 
0 45 
0 40 
I 00 
2 20 
3 15 
3 50 
3 15 
4 40 
5 40 
0 35 
I 05 
I 00 
0 15 E 
0 35 E 
0 25 E 
2 10 
2 45 
3 35 
3 20 
4 35 
5 40 
1 00 
I 20 
I 40 
0 50 
I 20 
I 30 
2 10 
2 45 
3 30 
3 15 
4 IS 
S 35 
I 20 
2 00 
2 25 
I 30 
2 15 
2 35 
2 10 
2 55 
3 50 
3 10 
4 10 
S 20 
2 00 
2 40 
3 20 
2 15 
3 05 
3 40 
2 25 
3 30 
4 30 
3 10 
4 15 
5 40 
2 35 
3 45 
4 40 
2 45 
4 00 
S 00 
3 05 
4 20 
5 35 
3 30 
4 45 
6 25 
3 25 
4 55 
6 20 
3 40 
5 »S 
6 40 
3 40 
5 20 
6 50 
4 10 
5 40 
7 35 
4 30 
6 20 
8 15 
4 45 
6 40 
8 35 
4 30 
6 20 
8 20 
4 45 
6 40 
8 50 
s 30 
7 45 
10 15 
5 45 
8 05 
10 35 
4 45 
6 45 
9 10 
5 05 
7 20 
9 5 ° 
6 10 
8 40 
11 30 
6 25 
9 15 
12 00 
3 50 
5 35 
7 10 
4 10 
6- 00 
7 55 
S 55 
8 25 
II 20 
6 15 
9 00 
12 00 
0 00 
0 30W 
I loW 
0 15 
0 00 
0 40W 
i 
4 20 
6 20 
8 IS 
4 40 
6 40 
8 50 
5 4SW 
9 30 
13 35 
5 25W 
9 osW 
13 15 
1 40 
2 15 
2 50 
2 10 
2 50 
3 40 
9 35 
14 20 
18 45 
9 IS 
13 50 
18 45 
I osW 
I 45W 
2 4sW 
0 3sW 
I 05W 
I 40 W 
9 35 
13 35 
17 30 
9 20 
13 05 
17 20 
3 10 
4 30 
6 40 
2 25 
3 40 
5 15 
7 55 
11 00 
14 10 
7 30 
10 30 
13 40 
4 15 
6 05 
8 20 
3 25 
4 50 
6 50 
6 15 
8 20 
lo 50 
5 40 
7 40 
lo 15 
4 40 
6 40 
9 10 
3 45 
5 25 
7 30 
4 40 
6 15 
8 15 
4 10 
5 30 
7 40 
4 40 
6 40 
9 10 
3 45 
5 30 
7 35 
3 30 
4 35 
6 10 
3 IS 
4 20 
5 50 
4 35 
6 05 
8 20 
3 45 
5 30 
7 35 
2 10 
2 45 
3 40 
2 40 
3 25 
4 45 
3 50 
5 >5 
6 55 
3 45 
5 25 
7 25 
0 25 
0 30 
0 50 
2 IS 
2 50 
3 50 
2 55 
3 50 
5 »5 
3 40 
S 00 
6 50 
I 20 E 
2 05 E 
2 15 E 
1 40 
I so 
2 30 
I so 
2 25 
3 20 
3 25 
4 25 
5 55 
2 30 
3 35 
4 J 5 
0 35 
0 00 
0 20 
0 55 
I 05 
» 45 
2 40 
3 20 
4 2 $ 
2 40 
3 55 
4 40 
I 05 E 
2 15 E 
2 30 E 
0 IS 
0 15 
0 40 
* 45 
I 50 
2 40 
2 35 
3 35 
4 20 
2 35 
3 5 ° 
4 45 
Latitude 51° 30' N, variation 24^40' 'W, the same 
as near London in 1820. 
Latitude 73° 14' N, variation 124® W, the same as 
at Port Bowen in 1825. 
Angle between the magnetic poles. 
Angle between the magnetic poles. 
130° 
170° 
130° 
170° 
Height of the needle’s centre 
Heiglit of tlie needle’s centre 
Height of the needle’s centre 
Height of the needle’s centre 
above the centre of the circle 
above the centre of tlie circle 
above the centre of the circle 
above the centre of the circle 
described by the poles. 
described by the poles. 
described by the poles. 
described by the poles. 
Inches 
Inches 
Inches 
Inches 
Inches 
Inches 
Inches 
Inches 
Inches 
Inches 
Inches 
Inches 
12*25 
lO* 25 
8*25 
12*25 
10*25 
10*25 
12*25 
10*25 
8*25 
12*25 
10*25 
8*25 
Deviation. 
Deviation. 
Deviation. 
Deviation. 
Deviation. 
Deviation. 
Deviation. 
Deviation. 
Deviation. 
Deviation. 
Deviation. 
Deviation. 
0 / 
0 t 
0 / 
0 / 
0 / 
0 / 
6 / 
0 / 
0 / 
0 / 
0 / 
2 45 E 
3 40 E 
4 35 E 
2 50 E 
4 25 E 
5 15 E 
1 40 E 
2 20 E 
3 00 E 
2 55 E 
3 50E 
5 05 E 
2 25 
3 25 
4 05 
3 30 
5 00 
6 10 
I 05 
1 20 
1 35 
2 15 
2 40 
3 40 
2 10 
2 55 
3 40 
3 30 
4 40 
6 00 
0 20 
0 20 
0 20 
1 20 
I 25 
I 50 
2 10 
2 55 
3 40 
3 IS 
4 20 
5 40 
0 15W 
0 30W 
I ooW 
0 20 
0 15 
0 00 
2 10 
2 55 
3 50 
3 05 
4 IS 
5 25 
0 55 
I 25 
2 20 
0 25W 
1 ooW 
1 40W 
2 25 
3 25 
4 30 
3 05 
4 15 
5 35 
I 40 
2 20 
3 30 
1 30 
2 20 
3 26 
3 05 
4 IS 
5 25 
3 25 
4 40 
6 15 
2 25 
3 25 
4 50 
2 25 
3 30 
5 00 
3 40 
5 10 
6 35 
3 55 
5 35 
7 20 
3 20 
4 30 
6 25 
3 20 
4 45 
6 35 
4 15 
5 55 
7 40 
4 25 
6 20 
8 20 
4 05 
5 35 
7 40 
4 IS 
5 SO 
8 00 
4 20 
6 05 
8 00 
4 30 
6 20 
8 35 
4 40 
6 30 
8 35 
4 55 
6 45 
9 10 
2 50 
3 5 ° 
5 15 
3 IS 
4 15 
5 40 
4 55 
6 45 
8 55 
5 20 
7 10 
9 25 
1 20W 
2 50W 
4 15W 
I 00W 
2 loW 
3 50W 
4 50 
6 35 
8 30 
5 20 
6 45 
9 05 
7 00 
11 30 
15 30 
6 45 
10 50 
15 25 
4 05 
5 30 
7 00 
4 30 
5 50 
7 40 
10 05 
15 00 
19 25 
9 50 
14 45 
19 35 
2 50 
3 40 
4 50 
3 20 
4 15 
5 35 
9 45 
13 40 
17 35 
9 25 
13 25 
17 30 
I 20 
I 35 
2 20 
I SO 
2 10 
3 00 
7 55 
10 30 
13 45 
7 25 
10 20 
13 25 
0 05 E 
0 30 E 
0 20 E 
0 25 
0 IS 
0 35 
5 50 
7 SO 
10 35 
5 30 
7 25 
10 00 
I 30 
2 25 
2 35 
0 50 E 
I 30 E 
I 40 E 
4 20 
5 45 
7 40 
3 55 
5 IS 
7 20 
2 40 
3 45 
4 30 
I 55 
2 50 
3 30 
3 00 
4 00 
5 25 
2 55 
3 55 
5 30 
3 30 
4 5 ° 
6 00 
2 40 
3 45 
4 50 
I 40 
2 IS 
2 55 
2 20 
3 00 
4 20 
3 45 
5 25 
6 55 
3 15 
4 35 
5 50 
0 
0 
0 00 
0 00 
I 55 
2 20 
3 20 
3 45 
5 30 
7 05 
3 35 
5 IS 
6 35 
* 45 
2 40 E 
2 55 E 
I IS 
I IS 
I 45 
3 40 
5 20 
6 45 
3 40 
5 20 
6 50 
0 
N 
4 00 
3 40 
0 05 
0 35 E 
0 25 E 
3 10 
4 30 
5 45 
3 40 
5 20 
6 40 
3 05 
4 20 
5 05 
I 30 E 
2 40 
3 20 
2 25 
3 25 
4 25 
3 30 
4 45 
6 15 
2 50 
3 40 
4 35 
2 55 
4 25 
5 20 
1 40 
2 20 
3 00 
2 55 
3 so 
5 05 
i 
