in the position of the horizontal needle , &c. 
137 
North end of Needle to the South. 
In this case, the adjustment of the magnets was the same as in the preceding observations on the 14th 
of February, with this exception, viz. that their ends nearest to the needle were 27 inches from the 
centre of the compass-box ; the needle under these circumstances making 1 vibration in 14 seconds, 
and the directive force reduced in the ratio of 0,154 to 1. 
Direction of 
Mean Time 
A. M. 
Reading of 
Temp. 
north end of 
Time that a ho- 
Date. 
of Obser- 
or 
north end of 
Fahren 1 . 
needle during 
rizontal needle 
Winds. 
Weather. 
Remarks, &c. 
vation. 
P. M, 
Needle. 
westerly daily 
took to make 
Instr. 
variation. 
60 vibrations. 
1825. 
h. m. 
0 / 
O 
ra. s. 
Feb. 17th 
O 20 
A. M. 
S 5 20 F. 
22 
NNW 
Hazy 
0 45 
5 4 °- 
— 22 
Light 
weather 
— 1 00 
— 22 
17 S 2 >5 
Max. easterly 
5 4° 
variation. 
4 4° 
5 40 
— 22 
17 56,4 
5 5° 
5 4° 
— 2 3§ 
6 15 
5 4° 
—23 
>7 59>5 
7 4° 
5 4° 
— 22 
>7 55 
9 00 
5 4° 
— 22 
J 7 5 4> 3 
9 37 
5 30 
— 2I I 
Calm 
Hazy 
10 7 
5 3o 
-211 

1 7 5 2 
weather 
10 30 
5 3° 
■ — 21 
1 1 10 
5 3o 
— 21 
1 1 20 
5 20 
— 2I I 
• • • . 
17 5°>5 
Noon. 
3 40 
- 2 ’§ 
c 
• • a • • 
18 1 
North 
0 45 
P M. 
3 20 
— 21 
X* 
17 57-8 
Light 
1 20 
3 °° 
—21 
r a> 
1 30 
2 00 
— 21 
<D 
rCj 
1 40 
0 50 
— 21 
-*-* 
O 
1 45 
0 40 
— 20 
2 00 
0*20 
—20 
l 7 5 1 >7 
Max. westerly 
variation. 
2 12 
South 
— 20 
2 30 
S 0 20 W 
— 20 
2 45 
0 40 
— 20 
• • • • • • • 
Hazy to 
4- % 00 
1 OO 
—20 
17 50,8 
I OO 
20 
Clearover 
J j 
3 20 
1 00 
— 20 
head and 
4 12 
0 50 
— 20 
>7 47> 2 
to the 
6 00 
c 40 
— 21 
17 5i-4 
westward 
7 35 
0 40 
2 1 — 
17 50 
8 10 
S 1 ^ n F, 
—22 
Aurora faint 
8 10 
2 30 
21 
Hazy 
to the N. E. 
9 00 
j 
2 50 
2 1 2 
by compass. 
9 3o 
3 00 
— 22 
Aurora not 
9 5° 
4 10 
— 22 
visible at 
10 00 
6 00 
— 22 
17 47.3 
8.30. 
10 10 
6 20 
—22 
10 30 
6 20 
— 22 
1 1 00 
6 20 
— 22 
17 50 
11 30 
6 40 
— 22 
Midn* 
6 40 
— 22 
17 5 2 >5 
MDCCCXXVI. * T 
