658 
PROFESSOR W. RAMSAY AND DR. J. SHIELDS ON THE 
Ethyl oxide. 
K = 2-1716. 
cl = 8-5. 
\ = 0-03. 
Methyl formate. 
K = 2 0419. 
cl = 5-9. 
X = 0-044. 
7 (M'y)i. 
7 (Mu)4. 
KCl 
Kd 
T. 
HE- 
lO^’- 
i 
Cal. 
I'ound. 
i 
Cal. 
[ Found. 
0 
18-45 
0 
0 
0 
12-1 
i 
1 0 
0 
4-5 
13-6 
4-9 
5-5 
4 
8-1 
4-2 
4-0 
9-0 
9-6 
11-8 
12-3 
14 
2-9 
19-4 
19-2 
14-5 
6-8 
19-8 
19-9 
24 
1-1 
38-1 
37-7 
24-5 
3-4 
38-2 
39-0 
31 
0-4 
57-8 
57-3 
34-5 
1-7 
58-2 
58-6 
44 
0-1 
77-9 
76-9 
44-5 
0-9 
79-1 
78-7 
54-5 
0-4 
100-3 
100-4 
64-5 
0-2 
121-8 
122-0 
74-5 
0-1 
143-4 
143-6 
84-5 
0-05 
165-1 
165-3 
• 
Ethyl acetate. 
Benzene. 
fC = 
2-2-256. 
K — 
2-1043. 
d = 
6-7. 
d = 
6-5. 
\ 
0-0312. 
X = 
0-029. 
7 
7 (M^j)t. 
K(l 
Kd 
h". 
loxr 
Cal. 
Found. 
Cal. 
I’ound. 
0 
14-9 
0 
0 
0 
13-7 
0 
0 
6 
9-7 
8-1 
7-2 
8-5 
1-1 
11-9 
9-0 
11 
6-8 
16-4 
15-9 
13-5 
5-5 
20-3 
19-9 
21 
3-3 
35-1 
35-7 
18-5 
. 4-0 
29-3 
28-8 
31 
1-6 
55-7 
56-8 
28-5 
2-0 
48-3 
48-6 
41 
0-8 
77-1 
78-4 
38-5 
1-0 
68-3 
68-7 
51 
0-4 
99-0 
98-9 
48-5 
0-5 
88-9 
89-0 
61 
0-2 
121-0 
120-4 
58-6 
0-3 
109-7 
110-1 
71 
0-1 
143-2 
143-0 
68-5 
0-1 
130-6 
131-0 
78-5 
0-1 
151-6 
151-9 
6. Historical resume. 
The first experiments on the influence of temperature on surface-tension were made 
by Frankenheim (‘Jour. Prakt. Chem.,’ vol. 23, p. 401). Laplace and Poisson, it 
is true, considered the question, but only in the sense that the diminution of density 
of the liquid would alter the length suspended. Frankenheim, however, found that 
the capillary ascent diminishes much more rapidly with rise of temperature than the 
