chronometers by the proximity of masses of iron. 
375 
Observations on No. IV. continued at the Royal Military Academy. 
p. 30 
y 6. 
Ther- 
mo- 
meter. 
60 
59 
59 
57 
57 
57 
60 
56 
54 
:} 
54 
54 
54 
55 
56 
55 
55 
53 
50 
50 
51 
Clock 
Rate. 
* 
+ 106 
+ 1-06 
—07 
—025 
— 0 0 
—01 
25 
—02 
Chronometer 
+ or — 
at Noon 
— 0 
— O 
— 0 
— 0 
— 0 
3'9 
31 
33 
45 
4 5 
— O 40 
— 0 3 5 
— O 30 
— O 2 5 
0 9 
+ 0 06 
+ 0 23 
+ 0 3'3 
+ 0 3-55 
+ C 5'4 
+ 0 7’15 
+ 0 7 95 
+ 965 
+ 1105 
+ 1235 
Daily Rate 
of Chrono- 
meter. 
+ 1-2 
+ 08 
— 0-2 
— 1-2 
—00 
+ 0 5 
+ 0-5 
+ 0*5 
+ 05 
+ 1-6 
+ 1-5 
+ 1'7 
+ 10 
+ 025 
+ 1/5 
+ 1 75 
+ 0-8 
4 1-7 
+ 1-4 
+ 13 
Mean Rate 
in each 
position. 
+ 1-2 
> + 0-2 
+ 1-5 
+ 1*1 
+ 1-3 
Gain or Loss 
per day in 
each po- 
sition. 
Time of ten 
Compass 
Vibrations 
—1-3 
—0-4 
■2 
32 5 
33 
32-5 
41-0 
41-0 
Proportional 
Magnetic 
intensity. 
100 
97 < 
l 
100 
63 
63 
Position of Chronometer, Remarks, &c. 
Detached, the farther observations being trans- 
ferred to the Royal Military Academy. 
The Chronometer, during this interval, was 
placed to the East of the ball, 2 inches from 
the floor, and distance from the vertical 
through the centre of the ball ll’l inches, 
corresponding to lat. 20° 45', long. 7° 45', 
central distance 12. 12 o’clock. South. 
Again detached from the ball. 
Placed to the South of the ball, 1 inch from 
the floor, 10 inches from the vertical, or lat. 
9° 19' N.long. 90° central dist. 11-4 inches 
12 o’clock. South. 
Same situation, but the 12 o’clock turned to 
the North. 
The clock rates from April 30th, are for the Astronomical Clock at the Royal Military Academy, by Pennington. 
