1235 
mixtures were determined at a set of temperatures. So long as there 
are three phases together, we find of course always the triple pres- 
sure; as soon, however, as one of the liquids has disappeared, we 
leave. the triple curve, and every mixture will exhibit its own pres- 
4) 5 40 75 26 25 30 35 ao 45 30 55 ao 65 
Fig. 4. 
Proceedings Royal Acad. Amsterdam, Vol. XIX. 
