In dissociation the breaking up is only partial, and the resultant consists of a mixture of decomposed and undecomposed parts.

See Ganot's Physics, 17th English edition, Sec.

395, for examples .-- ED.] The comparison of the two cases leads to the employment of a new image for representing the phenomenon which has been produced throughout the saline solution.

We have introduced a single molecule of salt, and everything occurs as if there were 1.75 molecules.

May it not really be said that the number is 1.75, because the sea-salt is partly dissociated, and a molecule has become transformed into 0.75 molecule of sodium, 0.75 of chlorium, and 0.25 of salt?
This is a way of speaking which seems, at first sight, strangely contradicted by experiment.