( 644 ) 
as an appendix of the transversal plait. Only when the longitudinal 
plait has detached itself entirely from the liquid curve of the trans- 
versal plait above the critical temperature of mixing, it can be 
regarded in my opinion as a separate plait by the side of the 
transversal one. This is in full agreement which what we find e. g. 
for the boundary-curves in the 7Zx-representation (see fig. 2). 
As long as the two parts of the boundary-curve, for instance N°. 2, 
are not yet separated, we can hardly speak of two boundary-curves: 
it remains one continuous boundary-curve; only beyond the transitional 
case N°. 3, e. g. N°.4, we have a right to speak of two isolated 
boundary-curves. 
As to the values of the different critical temperatures, we still 
mention, that with C,H,-+-CH,OH the upper critical point was 
found at 21° C., with C,H,, + id. at 19°,5, and with C,H,, + id. 
at cirea 40°. With C,H,, + C,H,OH the latter temperature immediately 
falls down to — 65°. 
7. Resuming all that precedes, we have the following summary. 
(p‚ designs the threephase-pressure, p, and p, the vapour-pressures 
of the two components). 
C,H, + CH,OH 
Type I |, between p, and p, | C,H, + H,O 
(fie. 4) SO, + H,O 
ore) | 
Drs Pp, and ip, Ether + H,O 
C,H, + C,H,OH, C,H,OH, 
ps between p, and p, nn 
Type I iso-id., n. C,H,OH. 
(fig. 7). 
lp, >p, and p, Triethylamine + H,O 
ee | ae OR 
Type a OENE 
(ie 11) 4 Op: and CAH En id. (dear +) 
C,H,, + C,H,OH 
|» >p. and p, { H,O + Phenol (%/ar +) 
H,O + Aniline; id + isobutylalcohol. 
Br, + H,O ;CS, + H,O, CH,OH, C,H,OH, 
\ C,H,OH, C,H,OH. 
