1 34 
Lieut. Foster’s observations on the diurnal changes 
North End of Needle to the North. 
Date. 
Mean Time 
of Obser- 
A. M. 
or 
Reading of 
north end of 
Temp. 
Fahren*. 
Direction of 
north end of 
needle during 
westerlydaily 
variation. 
Time that a ho- 
rizontal needle 
took to make 
60 vibrations. 
Winds. 
Weather. 
Remarks, &c. 
ration. 
P. M. 
Needle. 
Instr. 
1825 . 
Feb. 15th 
h. m. 
0 2 Z 
1 OO 
A. M. 
© 9 
Nio 00 E 
10 00 
0 
—24 
—26 
»«««•••« 
m, s. 
©©©(5000© 
NNW 
Squally 
Hazy 
1 50 
2 OO 
2 IO 
— 2 16 
2 30 
IO OO 
12 J 
13 20 
13 30 
53 3 ° 
—26 
—26 
— 26 
-=26 
—26 
i 
6 ss 
7 00 
7 S 
7 io-. 
7 12 
+ 7 15 
10 7 
10 35 
11 OO 
11 10 
11 30 
11 50 
” 55 
0 10 
0 30 
North 
<== 24 . 
*■ 
NNW 
Hazy 
( 
1 
j 
P. M. 
N 3 00W 
6 00 
8 20 
11 00 
12 00 
10 50 
10 30 
10 00 
Q 30 
9 30 
9 3 ° 
10 00 
10 00 
10 20 
INNNNN 1 NNNNNNNNNI 
1 I 1 li 1 i 1 1 1 I 1 1 1 1 
-6 
a 
X 
4 ~l 
• • -C • • 
0& 3 
. . 0 . . 
H 
18 5,2 
18 1,5 
I? 51,8 
Fresh 
North 
j 
Max. westerly 
variation . 
I OO 
I IO 
I 30 
1 57 
2 IO 
2 35 
3 OO 
IO 20 
10 30 
10 00 
9 30 
9 00 
8 30 
—23 
™23 
“” 2 5 
—25 
26 
=—26 
ooecsr®©© 
17 5°>5 
7 5 ° 
8 00 
9 00 
9 2 
4 00 
2 30 
1 40 
N 0 30 E 
% 20 
— 26 
.2 r 
17 43>7 
18 00,7 
r 
-25 
«— >2_C 
Easterly 
Light 
Ditto 
1 
j 
1 
Feb. 1 6th 
y 3/ 
10 17 
n 36 
Midn* 
0 45 
0 50 
0 57 
1 OO 
1 3 
1 7 
A.M 
2 30 
3 10 
3 30 
11 00 
11 40 
12 15 
13 5 
13 3 ° 
*3 4 ° 
13 5 ° 
13 00 
12 00 
j 
— 2 5 
—25 
=-25 
— 2 5 
—25 
—25 
—25 
—25 
—25 
OO©O©G®0 
©0®&®e®O 
*7 4 i 
17 46,8 
e<p©o®©oo 
l 7 55 $ 
Fine clear 
Max. easterly 
variation. 
1 25 
1 30 
z 5 
—25 
—25 
j The north end of the needle was now directed to the south ; but as observations were afterwards 
made with the north end of the needle to the north, they are given in this place, to preserve uniformity 
■ in the arrangement. 
