1036 
in the metastable region inside the transverse .plait, and for this 
reason cannot be realized experimentally. 
So we have now realized tbe succession which we supposed 
possible in our first communication *) for the systems propane + 
methylaleohol, isobutane -+ methylalconol, pentane *) + methylal- 
cohol, but about which we could then only pronounce a guarded 
opinion in the absence of further experimental material to prove the 
point. We now hope before long to be able to ascertain also for 
the system propane -+- methylaleohol whether it really belongs to 
case 115, or to case I. 
2. In the second place we have been able for the first time to fully 
demonstrate a case of type I, with its two critical end-points and G, 
and its maximum pressure /*). The system water-methylethylketone 
furnishes an example of this even though we cannot quite reach the 
lower end-point in consequence of the appearance of the solid phase. 
So we have a system here for which simply by change of pressure 
one passes from a partially miscible system to a system with complete 
miscibility. So such a case, to find which many attempts have been 
made, appears really to occur. In how far other systems will belong 
to this, and if particularly the systems classed up to now in case [ 
will appear to belong to IId, or possibly to a case la with a plait- 
point line which has a line parallel to the p-axis as asymptote will 
have to be revealed by further experiment. In the same way further 
experiment will have to show whether systems may be found 
belonging to type II/, in which the maximum temperature / and 
the maximum pressure // can be reached. 
*) Loc. cit p. 248. 
*) We avail ourselves of this opportunity to rectify a few inaccuracies in former 
tables. In the table annexed to p. 239 loc. cit, for methylalcohol + isopentane read: 
normal pentane. Idem in table VI, These Proc. XIIl, p. 877. In the last table erro- 
neously a L (lower mixing-point) is added to the system ethane + methylaleohol; 
this should be omitted, just as it is not found in the table of our first paper. 
Finally the said table VI shows an L? for the system ether and water. As the 
note of interrogation denotes, we think this lower mixing-point by no means 
proved. With our new apparatus we have already carried out a few experiments 
with the system water + ether; they all show that on increase of pressure and 
decrease of temperature the two phases will approach each other more and more; 
they point, indeed, in the direction of a lower mixing-point, but we have not suc- 
ceeded as yet in definitely ascertaining whether or no this will be realisabie on 
account of the appearance of the different ice modifications. We hope we shall 
be able to return to this subject later on. 
We owe the different corrections mentioned in this note to Prof. KUENEN’s 
great kindness, who drew our aitention to the mistakes made. 
8) yes A Ic 
