( 642 ) 
C,H,OH, and that between IL and III between x-butyl- and isoamyl- 
alcohol, the separation between I and HI in the case of CH,OH + 
different hydrocarbons is lying now between C,H, and C,H,. Propane 
and the following hydrocarbons + CH,OH belong consequently, just 
as C,H, + isoamylaleohol, and the greater part of the mixtures with 
an upper critical point, examined by Gururm, ALEXEJEW and ROTHMUND, 
to the third general type, which we will briefly consider now. 
6. The third general type is principally characterised by this, 
that the threephasepressure-curve meets vo longer the critical curve 
C,C,, but has come to an end already before (fig. 11). This third 
type may proceed either from the second type (see fig. 7), the 
threephasepressure-curve J/' M/" shrinking more and more, and 
finally vanishing, as is the case with the transition from C,H,4C,H,OH 
to C,H, + ©,H,,OH (see above) — or from the first type, when AM 
ends already before C, C,. In the first case (e.g. with C,H,+C,H,,OH, 
C,H, + ether) there exists no threephase-equilibrium at all — or it 
should be at very low temperatures, which even may be expected 
according to the theory (see my preceding communication), so that 
the question arises, whether also in the case of fig. 7 there exists 
at low temperatures a new threephasepressure-curve, and we will 
return to that question at the end of this communication — in the 
second case there exists a threephase-pressure from the beginning, 
which vanishes at a definite temperature (wpper critical point). To 
this latter case belong the mixtures of CH,OH with C,H,, ete., 
H,O + CO,, CS, + different alcohols (KunnEN), and also the greater 
part of the mixtures formerly examined (see above). 
But in the case of this third type there exists still another diffe- 
rence. Firstly the threephasepressure-curve again may lie either 
between or without the vapourpressure-curves of the two components, 
with all the consequences, connected with it in the p, a-diagrams, 
ete. (see above). As to the mixtures of CH,OH with C,H,, C,H,,, 
C,H,,, with all these is found (Kurnen, l.c), that the threephase- 
pressure is higher than the vapourpressures of the hydrocarbons, con- 
trary to C,H, + CH,OH, which belongs to type I, where the three- 
phasepressure is lower than that the vapourpressure of C,H,. Equally 
with phenol and water (SCHREINEMAKERS, Vv. D. Lee), H,O + CS, 
(RuenavLt) — where, according to the exceedingly small miscibility, 
the threephase-pressure is again a little smaller than the sum of the 
vapourpressures of the components — H,O + Br, (Bakuuts RoozeBoom), 
H,O + isobutylalcohol (Korowarow), CS, CH,OH and C,H,OH 
(Kueren), H,O + aniline (Kuen), ete. we find everywhere the three= 
