318 
PROFESSOR W. RAMSAY AND DR. S. YOUNG 
were employed. No correction was necessary except that the 
pressures under which the standard liquids boiled were read at 
the temperature of the room instead of at 0°, and altered 
accordingly. The temperatures are those of an ah’ thermometer. 
The vapour-pressures at each temperature were determined at widely different 
volumes. The extreme volumes are as a rule about 0'91 and 0’46 cub. centim. 
A. 
Jacketing vapour. 
Pressure. 
Temperature. 
Volume of 
1 gramme. 
Specific gravity. 
Vapour- 
pressure. 
Chlorobenzene .... 
mms. 
144-8 
O 
80 
c.cs. 
1-3572 
0 7368 
mms. 
1.340 
1.341 
1,341 
1,341 
Mean 
1,341 
>> .... 
208-35 
90 
1-3814 
0-7239 
1,896 
1,898 
1,898 
1,896 
Mean 
1,897 
)’ .... 
292-75 
100 
1-4015 
0-7135 
2,621 
2,637 
2,627 
2,625 
Mean , . 
2,627 
55 .... 
402-55 
110 
1-4228 
0-7028 
3,554 
3,561 
3,565 
3,565 
Mean 
3,561 
55 .... 
542-8 
120 
1-4495 
0-6899 
4,745 
4,764 
4,775 
4,770 
Mean . . 
4,763 
55 .... 
718-95 
130 
1-4755 
0-6777 
6,257 
6,245 
6.234 
6,224 
Mean 
6,238 
