607 
b E 
For n — 5,36 we have ae = 2,6, and V7 being = 2,65 we find: 
1 
2,6 
TT 9.65 
lt+n 
which is very near 1 viz. 0.98. With 4,, = oe we should have | 
3,1 
found /= 
2,65 
, so about 1,2. And as I have, indeed, repeatedly met 
with 7< 1, but never with /> 1, this is the reason that has induced 
me to try whether the theoretical value of 6,, would harmonize better 
with the observations than the simplified assumption, which implies 
that 6 = b, {1 + (n—1)z}. And the result obtained with the theoretical 
value of 6,, even leads us to consider the question for a moment, 
whether if we could always introduce it, / would not always appear 
to be =—1. But we have first to examine in how far the values of 
é,&, and n put by me for the ratio of the size of the molecules of 
water and ether, will appear to be correct. Thus for n = 4 the value 
b 
of me would be equal to about 2.19 with the same value of «, and 
1 
&,, and hence 
{2,65 = 2,19 
or 
=S: 
Now as I recently demonstrated (see among others Arch Neéerl. 
Série III A. Tome 1 p. 136 etc), we can calculate the value of a 
for a substance pretty accurately. We then found : 
Tay EREN 
pe fT 
And as for all substances, only with the exception of methyl 
alcohol, the value of LEENE we have: 
f-1 27 
27 (RT .,)? 
= 64 pe . 
6 
For water with RT., = Zen and p,, = 190, this yields the value of: 
dy = 0,01204 
467 
And for ether with 27, = ao and per = 35 the value of: 
Geth = 09,0353. 
