584 
DR. ANDREWS ON THE CONTINUITY OE THE 
cular line placed behind the tube. But above 30 o, 92 no such appearances are seen, and 
the most careful examination fails to discover any heterogeneity in the carbonic acid, as 
it exists in the tube. 
Table III. — Carbonic Acid at 31°T. 
s. 
t . 
• 
f . 
6479 
11-59 
80*55 
31-17 
235-4 
1 
55-96 
11-59 
83*39 
31-22 
227-4 
57*18 
11-58 
1 
86-58 
31-15 
219-0 
1 
58-46 
11-55 
1 
90*04 
31-19 
210-6 
5977 
11-41 
93*86 
31-18 
202-0 
1 
61*18 
11-40 
98*07 
31-20 
193-3 
62-67 
11-44 
1 
103*1 
31-19 
183-9 
1 
64*27 
11-76 
1 
109*6 
31-13 
173-0 
1 
65*90 
11-73 
1 
116-2 
31-19 
163-2 
1 
67-60 
11-63 
1 
124-4 
31-15 
152-4 
1 
69-39 
11-55 
134*5 
31-03 
. 140-9 
1 
71*25 
11-40 
147*8 
31-06 
128-2 
7^26 
11-45 
1 
169*0 
31-09 
112-2 
1 
73-83 
13-00 
1 
174*4 
31-08 
108-7 
75-40 
11-62 
1 
311*1 
31-06 
60-9 
1 
77*64 
11-65 
369*1 
31-06 
51-3 
1 
79*9* 
11-16 
1 
383*0 
31-10 
49-4 
1 
82*44 
11-23 
1 
395-7 
31-07 
47*9 
1 
85*19 
11-45 
1 
405*5 
31-05 
46-7 
The graphical representation of these experiments, as shown in the preceding page, 
exhibits some marked differences from the curves for lower temperatures. The dotted 
lines in the figure represent a portion of the curves of a perfect gas (assumed to have the 
same volume at 0°and under one atmosphere as the carbonic acid) for the temperatures 
of 13°T, 31°T, and 48°T. The volume of the carbonic acid at 31°T, it will be observed, 
diminishes with tolerable regularity, but much faster than according to the law of 
Mariotte, till a pressure of about 73 atmospheres is attained. The diminution of 
volume then goes on very rapidly, a reduction to nearly one-half taking place, when the 
pressure is increased from 73 to 75 atmospheres, or only by of the whole pressure. 
The fall is not, however, abrupt as in the case of the formation of the liquid at lower 
