( 537 ) 
have to enter fully into the very heart of the matter as I cannot 
assume the reader to be fully acquainted with the details of these 
investigations. But then I should think I abused the hospitality 
which this Academy so courteously extends in its publications also 
t0 non-members. So I think that the above will ^ 
Laar should, however, wish to pursue this discussion elsewhere, 
am willing, though not desirous, to continue it. 
Chemistry. - “The equilibrium solid-liquid-gas in binary systems 
w hick present mixed crystals. ” By Dr. H. R. Krutt. (Com¬ 
municated by Prof. P. van Romburgh.) First communication. 
In the Archives Nderlandaises [2] 5 (Jubilee number in honourof 
Prof. Lorentz) p. 360 (1900) Prof. Bakuuis Roozrboom pub^hed an 
article “Sur l’equilibre de cristaux mixtes avec la l ,hase va ^"' 
in which he described and illustrated the ptx surface of a binary 
system when exclusively homogeneous mixed crystals oeo» 
phase. He treats the case of unlimited miscibility m all Ph^» d 
especially for a system in which the melting point line proceeds 
wfthdut a maximum or a minimum. He has, moreover, limited himself 
to the case that the three-phase line solid-liquid-gas (SLG) also occurs 
without a maximum or a minimum. , .- ik, n. 
These matters have not been further^investigated h 
there was in fact no inducement to do so, as there ha* been an 
uZt “J absence of experimental f search Only two mv.t, ; 
gators, Speranski ’) and KCster’) furnished material as “ J*, 
fibrium of mixed crystals with a gas-phase, where^ &e P«earcto 
of Holman*) belong to a category of more comphcatix ph nom iuL 
I intend to carry out a series of investigations m order to extend 
our knowledge of the systems showing a miscibility in t e so i 
rr-Tiii 
trrsrz 2—* - *«-»— 
paper I know connected with this subject 
“Ueber Reifkurven”, Zeitschr. f. pbysikal. Ghem. 46, 379 (1903)- 
S) Zeitschr. f. physikal: Chem. 46, 70 (1903) and 51, 45 (1905). 
8) Ibid. 51, 222 (1905). 
% Ibid. 37, 198 (1901), " 
