( 535 ) 
was relinquished for the determination of the double point of the 
pinpoint line, and the quite general case') a, > a, b, <b, was 
C0I And on p 228: “We can, namely, characterize all possible pairs') 
of substances by the values of 6 and nr, and finally it will only ) 
depend m these values,') which of the three mam types w, 11 appear 
And on p. 230: “The calculations get, however, so exceedingly 
intricate that they proved practically unfeasible for the genial case) 
’And on p. 231: “This appears already from the fact that the 
substitution of the quite general assumption') b,<b, for the simp 
lied assumption *, = *. has made no change in the existence of a 
double point . . ., and that also the calculations for the limits ®f 
type III. .. may be carried out for the quite general case ) *.>*,• 
And on p. 232: “The calculation proves that in the quite genera 
case l ) < b ” etc. 
For everywhere where the general case is spoken of here, it is 
the Le that is meant, and also the quotation from 
p. 228 is possible only, by an identification of the genera case an 
th 2. S T al po C int' b of his remarks Mr. van Laak says in comiection 
with our sentence that his investigations: “very on «^edly. [ 
the stress on the existence of 0p » P^ 
by no means can be considered as a result ), a 
follows from the arbitrary, if not erroneous mpposUum ) of fee 
linear dependence of 5 and “Now I have never asserted that 
d 4 = 0 would always agree with what actually happens; again I 
have simply assumed') this in order to make the calculations') 
read on p. 231 of the cited paper: “We shall once more 
emphatically point out that the numeric') results ofent 
will naturily be modified, when 5 is no. assumed tofeimd ^tot 
of V and T ... but that qualitatively •) everything will .emam 
a " And^on n. 233: “Then further increase of pressure makes the 
phases 1 and 2 again diverge . . • without the lonj^^ ma p m 
ever closing again - as was formerly considered possdile ) [cf. 
i) The italics are mine. 
) T. and K’s italics. 
s ) Mr. van Laar’s italics. 
Proceedings Royal Acad. Amsterdam. Vol. All. 
36 
