chronometers by the proximity of masses of iron. 
379 
Observations on No. VI. continued at the Royal Military Academy. 
s. 
Ther- 
mo- 
meter 
Clock 
Rpe. 
Chronometer 
+ or — at 
Noon. 
Daily Rate 
of Chrono- 
meter. 
Mean Rate 
in each po- 
sition. 
Gain or Loss 
per day in 
each po. 
sition. 
Time of ten 
Compass 
vibrations. 
Proportional 
Magnetic 
intensity. 
Position of Chronometer, Remarks, &c. 
P- 3 ° 
y 6. 
0 
60 
} + 1 06 
/ </ 
+ 1 34‘6 
— 0-5 
—0-5 
32-5 
100 
Observations begun at the Royal Military 
Academy. 
59 
59 
57 
—07 
+ * 3 I- 9 
+ 1 30-2 
4- 1 290 
—27 
— 17 
1*2 
— 1- 5 
34 
91 < 
f 
L 
Placed to the South of the ball ; height 1 inch, 
distance from vertical 12 inches, or lat. 5 0 8' 
N. long. 90°, central distance 13-2 inches. 
12 o’clock. South. 
57 
57 
60 
56 
— 0*25 
+ 1 2 7'5 
4-1 26-0 
4-1 250 
+ * 2 3‘5 
— 1-5 
—i -5 
— 10 
— ‘•5 
1 
>— 1-4 
—i-o 
24 
183 . 
' 
Placed still to the South ; height 6| inches, dis- 
tance from vertical 10 inches, or lat. 19030' S. 
long. 90°, central distance 10 inches. 12 
o’clock. South. 
54 
54 
54 
54 
O'O 
O’ I 
+ 1 2 I '2 
4-1 19-6 
4-1 18-5 
—i-6 
— i-i 
J 
^ — 1*4 
— I-o 
25 
169 < 
' 
Placed to the North of the ball ; height 1 inch, 
distance 10 inches from vertical, or lat. 48° 
1 8' N. long. 90°, central distance 1 1-4 inches. 
12 o’clock. South. 
55 
56 
55 
55 
— 0*25 
4-1 17-9 
4-1 1 6-6 
4-1 156 
4-1 1 3-6 
— 1- 3 
— i-o 
2-0 
' 
— o-8 
56 
33 « 
Placed still to the North; height 13 inches, 
distance from vertical 9 inches, or lat. i6°2o' 
S. long. 90°, central distance 11 inches. 12 
o’clock. South. 
53 
5 ° 
5 ° 
5 * 
—0-20 
4-1 12.9 
4-1 11.7 
4-1 10.7 
+ « 9-5 
—07 
1-2 
— i-o 
1*2 
— o-6 
5 6 
33 < 
Same situation, but with the 12 o’clock turned 
to the North. 
he clock rates from the 30th, are for the Astronomical Clock of the Royal Military Academy, by Pennington. The above 
teter is corrected according to the new principle of Messrs. Parkinson and Frodsham. The rate of this chronometer for 8 
ter its return, was — o'^g. 
3 C 
'CCXXI. 
