Angle described by the north magnetic pole 
from true north, reduced into time. 
[To face p . 336. 
h 
0 
1 
2 
3 
4 
5 
6 
7 
8 
9 
10 
11 
12 
*3 
>4 
»5 
16 
'7 
18 
'9 
20 
2 ! 
22 
23 
Latitude 64° 28' N, variation 36° 24' E, the same 
as at Fort Enterprise in 1821. 
Latitude 51° 30' N, variation 19 0 
in London in 1759. 
Wj the same as 
Latitude 5 1° 30' N, variation 24 0 40' W, the same 
as near London in 1820. 
Latitude 73 0 14' N, variation 124° W, the same as 
at Port Bowen in 1825. 
Angle between the magnetic poles. 
Angle between the magnetic poles. 
Angle between the magnetic poles. 
Angle between the magnetic poles. 
O 
O 
170° 
130° 
170° 
130 0 
170° 
130° 
170 0 
Height of the needle’s centre 
Height of the needle’s centre 
Height of the needle’s centre 
Height of the needle’s centre 
Height of the 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 the circle 
above the centre of the circle 
above the centre of the circle 
above the centre of the 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. 
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 
Inches 
Inches 
Inches 
Inches 
Inches 
Inches 
Inches 
Inches 
Inches 
Inches 
Inches 
Inches 
12*25 
10*25 
8-25 
12*25 
10*25 
8-25 
12*25 
10*25 
8-25 
12*25 
10*25 
8-25 
12*25 
10*25 
8-25 
12*25 
10*25 
10*25 
12*25 
10*25 
8‘2s 
12*25 
10*25 
8 * 2 5 
Deviation. 
Deviation. 
Deviation. 
Deviation. 
Deviation. 
Deviation. 
Deviation. 
Deviation. 
Deviation. 
Deviation. 
Deviation. 
Deviation. 
Deviation. 
Deviation. 
Deviation. 
Deviation. 
Deviation. 
Deviation. 
Deviation. 
Deviation . 
Deviation. 
Deviation 
Deviation 
Deviation. 
0 / 
0 / 
0 / 
0 / 
0 / 
o / 
0 ' ^ 
0 / 
0 / 
0 / 
0 1 
0 / 
0 / 
0 / 
0 / 
0 / 
0 15W 
0 15W 
0 35W 
1 45 w 
1 55W 
2 40 w 
2 30 E 
3 40 E 
4 20 E 
2 35 E 
3 5 oe 
4 50 E 
2 45 E 
3 4 ° 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 5 ° E 
5 05 E 
0 15 E 
0 30 E 
0 20 E 
0 4 S 
O 40 
I OO 
2 20 
3 »5 
3 5 ° 
3 iS 
4 4 ° 
5 4 ° 
2 25 
3 25 
4 05 
3 3 ° 
5 00 
6 io 
1 °5 
I 20 
1 35 
2 i S 
2 40 
3 40 
0 35 
I OJ 
I 00 
0 15 E 
0 35 E 
0 25E 
2 10 
2 45 
3 35 
3 20 
4 35 
5 4 ° 
2 IO 
2 55 
3 4 ° 
3 3 ° 
4 40 
6 00 
O 20 
O 20 
0 20 
I 20 
1 2 5 
1 so 
I OO 
I 20 
I 40 
O 5O 
I 20 
I 30 
2 IO 
2 45 
3 3 ° 
3 15 
4 15 
5 35 
2 IO 
2 55 
3 4 ° 
3 15 
4 20 
5 4 ° 
0 15W 
0 30W 
1 00W 
O 20 
O I5 
O OO 
I 20 
2 00 
2 2 S 
1 3 ° 
2 i 5 
2 35 
2 IO 
2 55 
3 5 ° 
3 10 
4 10 
5 20 
2 IO 
2 55 
3 5 ° 
3 °5 
4 15 
5 2s 
0 55 
1 2 S 
2 20 
0 25W 
1 00W 
1 40W 
2 OO 
2 40 
3 20 
2 IS 
3 05 
3 4 ° 
2 25 
3 3 ° 
4 3 ° 
3 10 
4 15 
S 4 ° 
2 25 
3 2 5 
4 3 ° 
3 °5 
4 15 
5 35 
1 40 
2 20 
3 3 ° 
i 30 
2 20 
3 26 
2 35 
3 45 
4 4 ° 
2 4s 
4 00 
5 00 
3 °5 
4 20 
5 35 
3 3 ° 
4 45 
6 25 
3 05 
4 IS 
5 2 5 
3 2 5 
4 40 
6 i S 
2 25 
3 2S 
4 5 ° 
2 25 
3 30 
5 00 
3 25 
4 55 
6 20 
3 4 ° 
5 15 
6 40 
3 40 
S 20 
6 5° 
4 10 
5 4 ° 
7 35 
3 4 ° 
5 i° 
6 35 
3 55 
5 35 
7 20 
3 20 
4 3 ° 
6 25 
3 20 
4 45 
6 35 
4 3 ° 
6 20 
8 ij 
4 45 
6 40 
8 35 
4 3 ° 
6 20 
8 20 
4 45 
6 40 
8 50 
4 15 
5 55 
7 40 
4 2 S 
6 20 
8 20 
4 °5 
5 35 
7 4 ° 
4 15 
5 5 ° 
8 00 
5 3 ° 
7 45 
IO I5 
5 45 
8 05 
«° 35 
4 45 
6 4S 
9 10 
5 °5 
7 20 
9 50 
4 20 
6 05 
8 00 
4 3 o 
6 20 
8 35 
4 4 ° 
6 30 
8 35 
4 55 
6 4 s 
9 10 
6 10 
8 40 
11 30 
6 25 
9 IS 
12 OO 
3 5 ° 
5 35 
7 10 
4 10 
6 00 
*.55 
2 50 
3 5 ° 
5 15 
3 iS 
4 15 
5 4 ° 
4 55 
6 45 
8 55 
5 20 
7 10 
9 25 
5 55 
8 25 
II 20 
6 is 
9 00 
12 OO 
0 00 
O 30W 
1 10W 
0 I S 
O OO 
0 40W 
1 20W 
2 50W 
4 15W 
1 00W 
2 10W 
3 50W 
4 5 ° 
6 35 
8 30 
5 20 
6 4 s 
9 °s 
4 20 
6 zo 
8 i S 
4 4 ° 
6 40 
8 so 
5 45 W 
9 3 ° 
•3 35 
5 25W 
9 05W 
13 15 
7 00 
11 3 ° 
'5 3 ° 
6 45 
10 50 
15 25 
4 °5 
5 3 ° 
7 00 
4 3 ° 
5 5 ° 
7 4 ° 
1 40 
2 i S 
2 50 
2 10 
2 50 
3 4 ° 
9 35 
14 20 
18 45 
9 >5 
13 5 ° 
18 45 
10 05 
15 OO 
19 2 5 
9 5 ° 
14 45 
■9 35 
2 50 
3 4 ° 
4 5 ° 
3 20 
4 15 
5 35 
1 05W 
1 45W 
2 4sW 
0 3 sW 
1 osW 
1 40W 
9 35 
13 35 
*7 3 ° 
9 20 
13 °5 
17 20 
9 45 
13 4 ° 
17 35 
9 z 5 
'3 25 
17 3 ° 
I 20 
1 35 
2 20 
i s° 
2 IO 
3 00 
3 10 
4 3 ° 
6 40 
2 25 
3 4 ° 
5 *5 
7 55 
II OO 
14 10 
7 3 ° 
10 30 
13 4 ° 
7 55 
io 30 
13 45 
7 2 5 
IO 20 
13 2s 
0 05 E 
0 30 E 
0 20 E 
O 25 
0 is 
0 35 
4 15 
6 05 
8 20 
3 25 
4 5 ° 
6 s° 
6 15 
8 20 
lo 50 
5 4 ° 
7 40 
10 15 
5 50 
7 s° 
10 35 
5 30 
7 2 5 
IO CO 
1 30 
2 25 
2 35 
0 50 E 
1 30 E 
1 40 E 
4 4 ° 
6 40 
9 10 
3 45 
5 25 
7 3 ° 
4 4 ° 
6 i 5 
8 is 
4 10 
5 3 ° 
7 40 
4 20 
5 45 
7 40 
3 55 
5 15 
7 20 
2 40 
3 45 
4 3 ° 
' 55 
2 so 
3 3 ° 
4 4 ° 
6 40 
9 10 
3 45 
5 3 ° 
7 35 
3 3 ° 
4 35 
6 10 
3 ij 
4 20 
5 5 ° 
3 00 
4 00 
5 2 5 
2 55 
3 55 
5 3 ° 
3 3 ° 
4 5 ° 
6 00 
2 40 
3 45 
4 50 
4 35 
6 05 
8 20 
3 45 
5 3 ° 
7 35 
2 IO 
2 45 
3 4 ° 
2 40 
3 2 S 
4 45 
1 40 
2 >5 
2 55 
2 20 
3 00 
4 20 
3 45 
5 2s 
6 55 
3 15 
4 35 
5 5 ° 
3 5 ° 
5 >5 
6 55 
3 45 
5 25 
7 2 5 
O 25 
0 30 
O 5O 
2 i S 
2 50 
3 5 ° 
0 05 E 
0 00 
O OO 
1 55 
2 20 
3 20 
3 45 
5 3 ° 
7 °S 
3 35 
5 iS 
6 35 
2 55 
3 5 ° 
5 »S 
3 4 ° 
5 00 
6 50 
1 20 E 
2 05 E 
2 is E 
I 40 
i 50 
2 30 
1 45 
2 40 E 
2 55 E 
1 *5 
• 15 
* 45 
3 4 ° 
5 20 
6 4s 
3 4 ° 
5 20 
6 50 
1 s® 
2 25 
3 20 
3 25 
4 25 
5 55 
2 30 
3 35 
4 >5 
0 35 
O OO 
O 20 
2 5 ° 
4 00 
3 4 ° 
O 05 
0 35 E 
0 25E 
3 10 
4 3 ° 
5 45 
3 4 ° 
5 20 
6 40 
0 55 
1 05 
* 45 
2 40 
3 20 
4 2 5 
2 40 
3 55 
4 4 ° 
1 05 E 
2 15 E 
2 30 E 
3 °5 
4 20 
5 °S 
1 30 E 
2 40 
3 20 
2 25 
3 25 
4 2 5 
3 3 ° 
4 45 
6 i 5 
0 15 
0 15 
O 40 
» 45 
» 5° 
2 40 
2 35 
3 35 
4 20 
2 35 
3 5 ° 
4 45 
2 50 
3 4 ° 
4 35 
2 55 
4 25 
5 20 
1 40 
2 20 
3 00 
2 55 
3 5° 
5 oj 
