166 
Lieut. Foster’s observations on the diurnal changes 
North end of Needle to the N 85 0 E. 
Mean 
Time of 
Observa- 
tion. 
Temp. 
Fahren 1 . 
Directiou of 1 
Date. 
A. M, 
or 
Reading of 
north end of 
north end of 
needle during 
westerly daily 
Time that a ho- 
rizontal needle 
took to make 
Winds. 
Weather. 
Remarks, &c. 
P. M. 
Needle. 
Instr. 
variation. 
60 vibrations. 
1825 . 
April 6th 
h. m. 
5 10 
P. M. 
N 84 IO E 
O 
=20 
m. s. 
18 i,8 
6 6 
6 50 
84 OO 
84 IO 
—21 
i 7 5 6 
i 7 5 6 >7 
7 48 
84 20 
17 55 .7 
4 - 9 00 
83 30 
——22 

18 3,3 
10 00 
83 30 
18 0,3 
z 3 
10 30 
83 3 ° 
—24 
Easterly 
ii 00 
83 30 
—24 
18 00 
Clear and 
11 30 
83 30 
—24 
u 
light 
fine. 
(April 7th 
Mid 1 . 
1 10 
A. M. 
83 3 ° 
83 30 
-24I 
—25 
a 
° OP 3 
• • bfl- • 
18 2,5 
18 1, 1 
Easterly 
Clear and 
I 
1 S o 
83 30 
—25 
. . u . , 
u 
18 4,6 
light 
fine. 
| 
2 30 
83 3 ° 
”25 
l 
3 3 
3 5 ° 
83 30 
84 00 
— 2 5 
17 58,7 
1 7 5^,5 
i 
z 5 
5 00 
6 00 
84 20 
84 15 
—25 
17 56,6 
18 0,7 
z 5 
: 
7 00 
84 35 
-24 
18 6,1 
— 7 55 
9 10 
84 55 
84 30 
“23 
18 1,2 
18 s 
z 3 
j 
9 50 
84 30 
”22 
18 6,5 
a 
j 
10 1 1 
84 30 
”31 
1 1 2 
84 30 
20 
18 7,2 
A 
ix 5 1 
84 30 
— I 9 
Ditto 
Ditto 
Noon 
84 3 ° 
— 18| 
. ."d 
18 8 
0 30 
P. M. 
84 30 
— i 7 i 
cJ 
tC 
1 00 
83 30 
—17 
>7 55,2 
1 30 
82 20 
~i6| 
fcuQ 
Max. westerly var. 
2 00 
82 00 
— 16J 
e .*£ • • 
*7 53,5 

...... 
2 30 
81 30 
— i6 £ 
CD 
3 00 
81 30 
~i6 J 
* 9 o * * 
i 7 57 
5 00 
81 25 
— «7 
••h •• 
17 53 
5 30 
81 10 
—18 
+ 610 
81 5 
—19 
17 52,8 
6 30 
81 $ 
”i 9 
j 
( 
7 10 
81 5 
—20 
17 52,6 
7 3 ° 
81 10 
—20 
7 52 
81 35 
”20 
17 56,6 
7 55 
9 *9 
10 6 
81 40 
81 50 
82 00 
”20 
20 
21 

18 i 3 8 
\ 
j 
17 59*7 
I 1 IO 
82 20 
82 15 
83 30 
18 1,5 
18 1,5 
i? 59 
11 56 
1 00 
April 8th 
A. M 
”22 
Easterly 
Clear and 
Max. easterly tar. 
1 10 
84 30 
22 
light 
fine 
1 40 
84 30 
22 
1 
18 9 
2 IO 
85 00 
—22 
