594 
MR J. Y. BUCHANAN ON THE 
TABLE II.—Details of Experiments on the Compression produced on a Glass Rod by 
Pressures up to 240 Atmospheres. 
Series. 
LT, 
III. 
Pressure. 
Reading of 
Manometer 
No. 2. 
Pressure. 
Divisions 
of Mano- 
meter 
No. 2. 
(Ay — Ay) 
A 
20 
Wg) 
21:2 
20°1 
20°1 
19-7 
21°5 
20°7 
20°40 
Expansion in Micrometer 
Divisions. 
East 
End. 
sonesece| ico] 
x 
See Several, 
Bie 
C D 
6 11 
6 lat 
6 12 
5 12 
6 11 
6 10 
5 11 
6 11 
11:13 
10 19 
11 20 
11°5 20°5 
11 20 
10 19°5 
4 20 
5 20 
4:5 19°5 
19°81 
15 26 
14 27 
16 28 
3°5 25°5 
ifAl 26°5 
13 28 
8 Dif 
12 27 
6 28 
13 26 
8 26 
5 28 
12 26 
26°84 
Length of Glass Rod 
Diameter of do. . 
Weight of do. . 
1 Division of Micrometer . 
Date, 3d June 1880 
Temperature (Centigrade) 
Number of observations 
Pressure in atmospheres 
Linear compression . 
Do. per million . 
Do. do. per atmosphere 
Cubical compression, per 
10° per atmosphere 
Date, 3d June 1880 
Temperature (Centigrade) 
Number of observations 
Pressure in atmospheres 
Linear compression . 
Do. per million . 
Do. do. per atmosphere 
Cubical compression, per 
10° per atmosphere 
Date, 4th June 1880 
Temperature (Centigrade) 
Nuwnber of observations 
Pressure in atmospheres 
Linear compression . 
Do. per million . 
Do. do. per atmosphere 
Cubical compression, per 
10° per atmosphere 
H 
K 
75°05 inches. 
0:28, 
209°5 grammes. 
=0°'000417” 
13°5° 
nae 8 
A x 3:13 64 
0:000417D | 0:0047 
loss 
75-05, | 0° 
H : 
> 0 983 
38K 2:949 
13-7° 
bon 8 
Ax313 |} 118 
0:000417D | 0:00826 
au 110: 
75-05 0-0 
H 
Pp 0:942 
3K 2826 
128° 
ee 13 
Ax313 | 158 
0:000417D} 0:01119 
ef: 
75-05. | 194 
H 
Pp 0:946 
3K 2838 
