( 531 ) 
this nearly independent of the critical temperature of these substances 
(provided that the latter is between '/,- and 1-time of that of the 
water). 
All normal?) substances, which possess a critical pressure above 
+ 70 atm., mix in every proportion with water; all such sub- 
stances, having a critical pressure below + 35 atm., will form a 
continual plait (tig. 6). 
To the first group of substances belong those with relatively sica// 
molecular volume (many anorganic substances and salts); to the 
second group those with relatively great molecular volume (many 
organic substances). 
0? log Pe 
Ou 
have taught, that this factor at higher temperatures, where 3 comes 
into the neighbourhood of 1, can become very great, and also will 
be pretty strongly variable with z. So I found for that factor for 
B=1(7T= 230°) the values 2,57, 2,54, 2,25, 1,94 and 1,70, resp. 
for v= 0,1, 0,2, 0,3, 0,4 and 0,5. But at such high temperatures 
the deduced formulae are not longer exact, p being in that case 
no longer to be neglected against 7/,. 
However, for lower temperatures, where 8 approaches 0, 1 + 4 
will not differ much from 1, and will be little dependent on wv. At 
As to the factor 14+ A=1+4.24(1— 2) , the calculations 
these temperatures — and for these temperatures the formulae are 
deduced — 1+ 4 can, when not negleetable, yet be regarded as 
a constant factor. So I found for 1+ 4 the values 1,08, 1,10, 1,10, 
1,09 and 1,08, resp. for z — 0,1 unto 0,5. 
Finally, 1 have applied the formula (10) for the case of triethyl- 
amine and water, and found that, whenever the critical pressure, 
viz. 30 atm., lies below the above designed limiting pressure of 
35 atm., the appearance of a lower critical point at circa 18° C. 
is not in contradiction with the given theory. It must not be 
forgotten here, that when the temperature, where 3 is practically 
—0, lies above — 90°C., the limit in question also will lie below 
35 atm. 
1) And as we have already seen above, also many anomalous substances, where 
the variability of v is small. 
