1893-94.] Prof. Tait on Compressibility of Fluids. 
245 
On the Compressibility of Fluids. By Prof. Tait. 
(ReadJan. 15, 1894.) 
{Abstract.) 
The recent publication of the full results of Amagat’s magnificent 
experiments has led me to make further comparisons with the 
empirical formula (originally suggested by the graphs of my 
Challenger work) which I have on several occasions brought 
before the Society : — viz. 
v^-v_ e 
“ n +p 
I find that Amagat’s results, for a number of common liquids, from 
1 to 3000 atm. may be fairlij represented by substituting the 
following values of e and II in the above formula : — 
0° 
10° 
20° 
30° 40° C. 
Ether ^ 
0-291 
2420 
•296 
2240 
•302 
2100 
•310 
1980 
•319 
1860 
Ethylic Alcohol 
0-274 
3230 
•280 
3130 
•281 
2970 
•287 
2865 
•288 
2700 
Methylic ,, 
0-283 
3240 
•290 
3180 
•295 
2990 
•302 
2870 
Propylie ,, 
0-265 
3510 
•271 
3390 
•277 
3200 
•274 
2880 
Bisulphide of Carbon 
0-286 
3970 
•286 
3720 
•291 
3560 
•294 
3370 
•299 
3190 
Iodide of Ethyl . 
0-288 
3570 
•291 
2920 
Chloride of Phosphorus 
0-278 
3490 
•293 
2990 
Acetone . 
0-284 
3180 
•298 
2570 
For the curiously exceptional case of water we have 
0° C. 
2°-l 
4° -35 
6°-85 
io°-i 
14° -25 
20°-4 
29°-43 
0 
O 
48°-85 
0-303 
•303 
•307 
•311 
•313 
•314 
•314 
•313 
•327 
•323 
5940 
6030 
6220 
6390 
6560 
6680 
6830 
6940, 
7520 
7440 
whence compressibility for low pressures, 
0-0000511 
503 
493 
486 
478 
470 
459 
449 
43-4 
434 
