48 ART. 10. — K. IKEDA : STUDIES ON THE 



Cß is the molar fraction of paraldehyde. Q, the molecular heat 

 of fusion of this substance, has been calculated from the fusion 

 points by equation (17). The values of Q for lower temperatures 

 are not reliable, because the composition of the solution must 

 have suffered considerable change on account of the separation 

 of the paraldehyde as the solid phase ; and this source 'of error 

 is the more considerable as the molar fraction of paraldehyde is 

 the smaller. The notable decrease in the value of Q for C'ß < 0.2 

 is doubtless due to this cause. On the whole it appears as if Q 

 increases with a lowering temperature. If we assume 



■ Q = 3600 calories 



and recalculate the molar fraction C|i for observed fusion points, 

 the agreement with experimental data is tolerably good, the 

 maximum difference being less than 0.03. 



HoLLMANN has also measured the boiling points of various 

 mixtures of the two chemical species. The following calculation 



