RICHARDS AND ARCHIBALD. — CONCENTRATED SOLUTIONS. 351 



These facts, together with similar facts concerning solutions of three 

 other chlorides, are represented in the accompanying diagram. Evidently 

 the first parts of the four curves are very similar in tendency, but as the 

 highest concentrations are reached, the curves develop individuality. 



Mercuric Chloride foond in various Solutions. 



The ordinates represent equivalent concentrations of the solvent chlorides, and 

 the abscissae represent grams of mercuric chloride per litre of solution. The data 

 for baric, calcic, and hydric chlorides are to be found on pages 352, 353, and 354. 



Manifestly some particular property of the several solutions must be 

 responsible for the reaction ; and since the reaction results in raising the 

 quanti valence of the mercury, it may be concluded that the particular 

 property in question is the tendency of some molecular species already 

 in the solution to combine with mercuric chloride. 



