BANCROFT. — TERNARY MIXTURES. 347 



calculated for x, y, and z being expressed in cubic centimeters. A 

 discussion of these values is not possible at present, and in any case 

 they should be reduced to reacting volumes or eacting weights before 

 a rational treatment could be thought of. 



The measurements already communicated would be sufRcent by 

 themselves to establish the general law governing this class of equi- 

 libria ; but I have in addition experiments by other investigators which 

 give the same result. In 1871 Tuchschmidt and Follenius *" noticed 

 that carbon bisulphide was not infinitely miscible with aqueous alcohol 

 and they made a series of experiments to determine the saturation 

 points when carbon bisulphide was added to alcohol of known strengths. 

 They expressed their results by means of a complex empirical formula. 

 This is not necessary, as the general equation for two non-miscible 

 liquids covers the case entirely. In Table XV. the first column gives 

 the number of cubic centimeters of carbon bisulphide which will dissolve 

 in ten cubic centimeters of aqueous alcohol of the percentage compo- 

 sition by weight given in column two. In column three is the strength 

 of alcohol as required by the formula. 



* B. B., IV. 583. 1871. 



