128 Prof. Kuenen and Mr. Robson on Mixtures with 



in fig. 3. We were able to confirm this somewhat complex 

 series of changes with the 30 per cent, mixture at a tem- 

 perature o£ about — 63° C. We may leave it to the reader 



Fig. 3. 



Fijr. 4. 





to deduce the phenomena in other cases from the figures, and 

 to ascertain that the p-t figures (3 and 4) are in accordance 

 with the v-oo figures (5 and 6). 



