( 1261 ) 
2 
i ‘ Ss ‘ Se 
in the value of aoe and in the value of — near 7. At a value 
Di Vk 
of 1—m=0,0029, and Vi—m — 0,054, ie already equal to 1,14. 
Vk 
If also for methyl-aleohol for the saturate vapour we apply the 
formula : 
dp 
v vu f—l pv : (2). 
Py ai RE RT 
and if we caleulate the value of the first member from the data of 
SYDNEY Youne, we find, indeed, the existence of a maximum value 
just as for all the other substances, but it lies much nearer 7%, and 
is much larger. Then we find for the value of the first member at 
the following series of temperatures: 
0° 40° 120° 200° 210° 220° 225° 230° 
0,009 0,028 0,072 0,094 0,124 0,154 0426 £6,119 
493 gee 403 
The maximum occurs for m= —., while this occurs at m —=——~ 
513 466,8 
for ether. Also in the volumes there is a great difference. For 
hyl-aleohol Ge d for ether RES If this irregularity i 
methyl-alcoho ATR Se and tor ether 27.49: ns irregularity in 
the behaviour of methyl-alcohol is also to be ascribed to association, 
either quasi or real association, this substance yet agrees in so far 
dp Ae 
with all the others that there is a value for | , that it is even 
vl 
C v 
( 2) 
—— vD Db 
da vT 
RT 
decreases with the rise of temperature, and has even become ex- 
ceedingly small at 7%. But «x, will be much greater than for the 
other substances. 
But even though we should confine ourselves to normal substances 
the value of #j appears to be much larger than I suspected when 
L wrote my “Quasi-association”. It is true that [ added there that I 
did not venture to assert that the values mentioned there would be 
correct. And immediately after the appearance of my paper I saw 
that all the numerical values mentioned there for « would require 
revision, which I have begun to do in this paper. Some of the values 
mentioned then would even give unstable phases, which I hope to 
prove later on. When judging about the value of » also in the 
saturate vapour, it must not be overlooked that when a molecule 
negative up to 7, and that the positive value of 
