316 
Proceedings of the Royal Society 
The following tables give results for other substances treated in 
the same way as cork and vulcanite : — 
Pure India-rubber. 
Temp. 
in 
Degrees 
Centi- 
grade. 
Thermal Effect on applying 
Pressure. 
Thermal Effect on relieving 
Pressure. 
Pressure. 
Deflec- 
tion, 
Temp. 
Eaised. 
Else 
per Ton. 
Pressure. 
Deflec- 
tion. 
Temp. 
Lowered. 
Fall 
per Ton. 
14° '6 
29 
51 
0°*95 
0°*74 
22 ‘3 
4 '3 
0°*8 
0°*79 
46 
7*7 
r-42 
0°*70 
38 
7-2 
1°'33 
0°*79 
64 
10-9 
2 s -0 
0°*70 
49-4 
9-6 
1°'8 
0°*80 
Vidcanised India-rubber. 
16° 
26 
3-55 
0°'72 
0°*64 
19-2 
2-85 
0°*6 
o 
O 
45-4 
6-3 
r-3 
Q°*64 
38-7 
5*6 
1°*16 
0°*67 
66 
8-9 
1°*8 
0°*61 
56 
7*9 
1°*6 
0°*64 
Gutta-jpercha. 
16° 
22-5 
3-0 
0°*65 
0°*65 
22*5 
3-1 
0°*67 
0 o, 67 
46'6 
5-66 
1°*23 
0°*60 j 
46-6 
6-08 
1°*32 
0°*64 
66 
7-8 
1°*7 
0°*58 ; 
66 
8-9 
1°*9 
0°*63 
Beeswax. 
15° 
23-4 
3-94 
0°*86 
0°‘83 
23 
3*86 
o 
o 
oo 
0°*83 
47 
7-6 
1°*65 
0°*79 
43*6 
7*8 
1°*7 
0°*86 
66*4 
10-6 
2° *3 
0°*78 
60*6 
10*9 
2° *4 
0°*89 
Solid Paraffin. 
14° 
25 
3*94 
0°*61 
0°*5 6 
24*4 
4*0 
0°*62 
0°*57 
45 
7*2 
1°*12 
0°*56 
45 
7*6 
1°*18 
0°*59 
67 
10*4 
1°*62 
0°*54 
65 
31*26 
1°*76 
0°*61 
