258 PROFESSOR K. OLSZEWSKI ON THE 
ethyl alcohol, and oxygen, are given at the pressures at which observations have been 
made with the first of these substances. 
Boittine-Points on Absolute Seale. 




| | 
| pee he | Argon. | Benzene. | Ethyl alcohol. Oxygen. 
74.0°5 86-1 352°5 350-65 90°1 
| 18010 133-9 507°8 4626 1361 
19230 1347 512:5 465:8 137-4 
20750 | 1368 518-0 469°6 139-0 
22040 137-9 5293 | 72-7 140-2 
99650 | 1386 ve || sO 141-4 
27210 | 143-5 5383 483°7 145-0 
98837 | «1444 543-0 | 487-0 1465 
384.60 | 1520 565-9 503-1 153:7 
| | 



The ratios of the absolute temperatures of argon to each of the other substances 
were calculated and plotted against the centigrade temperatures of the latter. 
Straight lines were then drawn to pass as well as possible through the points, and the 
following formule for the ratios were obtained :— 
Argon 

R’= 2351+ 0001155 ¢ (¢ = temperature centigrade of benzene). 
Benzene 
Argon 
Ethyl Alcohol 
Argon 
R’ = '2164 + 0003765 ¢ (t= temperature centigrade of ethyl alcohol). 
R’ = 9518+ 000522 (t+ 190) (t= temperature centigrade of oxygen). 
Oxygen 
The ratios calculated from the boiling-points and those given by the above formule 
are compared in the following table :— 








| Ratios. 
Pressure | / | 
an Argon/Benzene. Argon/ Alcohol. Argon/Oxygen. 
millims. |— —— | ; 
| From From | From | From From From 
| boiling-points.| formula. | boiling-points.| formula. boiling-points.} formula. 
| Zee SOS et | fh | 
740°5 24.43 2443 2455) il 2456 el 9556 | "9555 
18010 2637 2622 | "2894. | 2878 9838 9795 
1923 2628 2628 "2892 | “2890 “9804 | “9802 
| 20750 | 2641 2634. 2913 2904 ‘9842 | 9810 
22040 | 2640 "2639 2917 2916 9836 | 9817 
22650 | 2644. 2641 | 2924 "2921 9802 |. 9828 | 
27210 | 2666 2657 | 2967 2957 “9896 9842 
28880 | "2659 2663 2965 | 2970 ‘9857 9850 
38460 | 2686 2689 3021 | “3030 9889 - 9887 
| es " shies ie 


