ON EVAPORATION AND DISSOCIATION. 
315 
Table I. 
Series I. 
Series II. 
Series III. 
Pressure. 
Tempera¬ 
ture. 
Pressure. 
Tempera¬ 
ture. 
Pressure. 
Tempera¬ 
ture. 
Pressure. 
Tempera¬ 
ture. 
Pressure. 
Tempera¬ 
ture. 
mms. 
O 
mms. 
O 
mms. 
O 
mms. 
O 
mms. 
O 
1115 
-14-61 
44-2 
6-58 
161-2 
30-4 
27-15 
- 1-4 
291-5 
42 3 
1315 
-12-35 
55-0 
10-16 
189-7 
33-7 
29-6 
o-o 
334-05 
45-5 
137 
-11-94 
61-0 
12-13 
217-8 
36"6 
40-2 
+ 4-8 
384-45 
48-75 
15-85 
- 10-02 
88-4 
18-64 
257-1 
39-8 
41-0 
5-0 
436-55 
51-45 
17-05 
- 8-70 
105-0 
21-77 
299-1 
43-2 
52-65 
9-3 
484-8 
53-75 
19-05 
- 6-89 
125-5 
25-19 
344-3 
46-3 
68-4 
13-95 
537-6 
56-4 
24-05 
- 3-19 
147-35 
28-32 
357-2 
47-2 
82-8 
17-45 
588-5 
58-7 
26-3 
- 1-98 
173-4 
31-63 
390-5 
48-9 
103-9 
21-4 
645-8 
60-9 
29-85 
+ 0-01 
200-9 
34-70 
449-6 
52-5 
139-8 
27’2 
699-0 
62-8 
32-95 
1-60 
235-1 
37-95 
494-2 
54-8 
166-8 
30-8 
743-2 
64-2 
36-1 
3-25 
541-6 
56-6 
1971 
34-1 
40-65 
5-06 
590-6 
58-7 
239-65 
38-2 
640-9 
60-9 
698-4 
62-95 
761-8 
65-0 
These results were plotted, and curves drawn through them, showing great regularity. 
The first two series were determined with substance boding at 64"85° ; and the third, 
with the alcohol after fractionation. 
Vapour-densities at low temperatures. —-The weight of the methyl-alcohol taken 
was not determined directly, but was ascertained from vapour-density determinations 
at the boiling-point of chlorobenzene under a pressure of 718'95 millims., corresponding 
to the temperature 130°. 
Table II. 
Temperature. 
Pressure. 
Volume. 
p. v. 
Mean P. V. 
O 
mms. 
c.cs. 
130 
320-3 
175 
56,053 
339-9 
165 
56,083 
373-2 
150 
55,980 
y 56,040 
406-1 
138 
56,042 
466-8 
120 
56,016 
J 
From these observations the weight was calculated to be 0'0716 gramme. 
2 s 
