298 DEDUCTION FROM THE GASEOUS THEORY OP SOLUTION. 



Now, if it be reQiembered that this case of aniline and water is not 

 an isohited one, but typical of many cases experimented on by 

 Alexeeff, and if it be remembered also that there exists no direct 

 experimental evidence to show that the law which governs these cases 

 is not the general law regulating all simple solutions it must I think 

 be granted that the facts do somewhat strongly support the hypothesis 

 of a critical solution point which I deduced in the first instance from 

 the general theory of solution. It may be summed up as follows: 



(1) In every system of solution which starts with a solid and its 

 simple solvent, the solid has a solution melting point which is lower 

 than its true melting point. Above this temperature the system con- 

 sists of two separate liquids, each of which is a saturated solution. 



(2 ) These two liquids become one homogeneous solution at a tem- 

 perature which depends on the ratio of the original ingredients. 

 There is one ratio which demands a higher temperature than any 

 other. This is the critical solution temperature, above which either 

 ingredient is infinitely soluble in the other. 



