in the position of the horizontal needle , &c, 
1 33 
North end of Needle to the North. 
The magnets being placed to the north and south of the needle, with their axes coinciding with the 
magnetic meridian, the north magnet had its north pole, and the south magnet its south pole, directed 
towards the needle, at the distance of 31,5 inches from the centre of the compass-box. In this posi- 
tion of the magnets, the needle made one vibration in 15 seconds, so that the directive force was 
reduced in the ratio of 0,14 to 1 nearly. 
Date. 
Mean Time 
of Obser- 
vation, 
A. M. 
or 
P. M. 
Reading of 
north end of 
Needle. 
Temp. 
Fahrenb 
Direction of 
north end of 
needle during 
westerly daily 
variation. 
Time that a ho- 
rizontal needle 
took to make 
60 vibrations. 
Instr. 
1825 , 
h m. 
° / 
O 
ID. S. 
Feb. 14th 
O 30 
A.M. 
N 3 20 E 
—i 9 
I OO 
4. CO 
— 19 
2 OO 
c 00 
— 19 
2 25 
5 00 
-i 9 
6 ic 
5 00 
20 
JJ 
6 40 
4 3 ° 
— 20 
6 45 
3 40 
— 20 
7 OO 
1 30 
20 
7 42 
North 
20 
7 5 2 
CM 
O 
O 
3 
— 20 
c 
10 00 
4 3 ° 
20 
• • , • 

10 10 
5 3 ° 
— 20 
I I OO 
8 00 
— 20 
X 
64 
1 1 1 7 
8 20 
— 20 
T! 
1 1 52 
8 20 
— 20 
<D 
X 
11 47 
8 40 
— 20 
Noon 
8 40 
— 20 
0 32 
P. M. 
9 00 
—20 
0 z c 
10 00 
20 
JJ 
O 37 
10 30 
— 20 
0 40 
10 55 
— 20 
+ 0 42 
1 1 00 
— 20 
I c 
1 1 00 
— 20 
I 23 
1 1 00 
— 21 
2 OO 
1 1 00 
— 21 
2 20 
1 1 00 
— 21 
2 32 
10 30 
— 21 
2 45 
10 00 
— 21 
8 10 
0 20 
— 21 
8 20 
N 2 5 E 
—21 
9 33 
2 50 
—23 
10 35 
8 50 
— 22| 
10 37 
10 20 
22| 
Z J 
1 1 2 
10 10 
—23 
11 30 
10 10 
—23 
1 1 52 
10 00 
—23 
Winds. 
Calm 
N. Fresh 
Weather. 
Hazy 
N. Light 
NE Fresh 
NNW 
Ditto 
Ditto 
Cloudy to 
the east 
ward 
Clear and 
fine 
Squally 
Moderate 
Ditto 
Remarks, &c. 
Aurora faint. 
Aurora not'vis. 
Max. easterly 
variation. 
Max. westerly 
variation. 
Max. easterly 
variation. 
I 
