132 
PROFESSOR W. RAMSAY AND DR. S. YOUNG 
T. 
P. 
y. 
in ccs. 
V. 
of 1 gram. 
T. 
P. 
Y. 
in ccs. 
V. 
of 1 gram. 
O 
243-10 
47,242 
0-86672 
4-9754 
c 
243-55 
61,121 
0-38803 
2-2275 
47,297 
0-84818 
4-8690 
244-35 
48,278 
0-88522 
5-0816 
J5 
47,360 
0-82964 
4-7626 
48,269 
0-84820 
4-8691 
5? 
47,423 
0-81111 
4-6562 
48,386 
0-81096 
46553 
47,471 
0-79268 
4-5504 
48,627 
0-77421 
4-4444 
47,528 
0-77419 
4-4443 
48,935 
0-73760 
4-2342 
47,523 
0-75589 
4-3392 
49,054 
0-70118 
4-0251 
47,587 
0-73758 
4-2341 
49,105 
0-66387 
3-8104 
>> 
47,653 
0-79198 
4-1258 
49,215 
0-62653 
3-5966 
47,659 
0-70086 
4-0233 
49,205 
0-58937 
3-3833 
47,654 
0-66228 
3-9166 
49,195 
0-55205 
3-1691 
47,649 
0-66385 
3-8108 
49,316 
0-51472 
2-9548 
47,644 
0-64516 
3-7026 
50,088 
0-47724 
2-7396 
>? 
47,639 
0-62651 
3-5965 
)•> 
52,452 
0-43976 
2-5251 
5? 
47,634 
0-60795 
3-4900 
>5 
61,144 
0-39585 
2-2724 
5) 
47,629 
0-58937 
3-3833 
246-0 
49,483 
0-88526 
5-0818 
J’ 
47,624 
0-57070 
3-2761 
49,673 
0-84824 
4-8693 
)> 
47,620 
0-55204 
3-1690 
49,791 
0-81100 
4-6555 
47,614 
0-53336 
3-0618 
49,917 
0-77425 
4-4446 
59 
47,679 
0-51469 
2-9546 
5? 
49,977 
0-73763 
4-2344 
55 
47,813 
0-49603 
2-8475 
55 
50,030 
0-70121 
4-0253 
59 
48,215 
0-48097 
2-7610 
55 
50,020 
0-66390 
3-8111 
243-55 
48,148 
0-88520 
5-0815 
50,010 
0-62656 
3-5968 
55 
48,131 
0-81094 
4-6552 
50,268 
0-58941 
3-3835 
48,159 
0-73758 
4-2341 
50,668 
0-55208 
3-1692 
5) 
48,395 
0-66385 
3-8109 
50,934 
0-51474 
2-9549 
48,433 
0-58937 
3-3833 
52,042 
0-47727 
2-7397 
48,476 
0-51471 
2-9547 
54,607 
0-43979 
2-5246 
55 
95 
48,915 
51,216 
0-47723 
0-43976 
2-7113 
2-5245 
55 
61,007 
0-40152 
2-3049 
The graphic representation of these numbers shows that the compressibility at low 
temperatures is nearly constant through a large range of pressure; but at high 
temperatures it varies, decreasing rapidly as pressure rises, and near the critical point, 
as observed by Andrews, the liquid is much more compressible than a gas. 
13. By plotting these results in curves, we are enabled to give the volumes 
occupied by liquid alcohol at constant pressures, with variation of temperature. To 
do so, however, required a somewhat tedious process. The actual results were plotted 
on curve paper, and by means of engineers’ curves (circles of different radii), lines 
were drawn, occupying as nearly as could be judged a mean position among the 
observed points. From these curves the volumes for certain definite pressures were 
read off, intervals of 5000 mms. at low temperatures, and 2500 or 1250 nuns, at high 
temperatures being chosen. From these numbers fresh curves were constructed, 
showing relations between temperature and volume for a series of pressures. These 
curves were also smoothed, and the results obtained by their means retransferred to 
the first set of curves. The curves published in Plate 3 show these doubly-smoothed 
curves, and the actual observations are also shown by circles, which will enable the 
amount of error to be estimated. The temperatures of the isothermals are written 
