Now if the quantity of water decomposed in Faraday's experiment be represented by the number 9, or in other words by the equivalent of water, then the quantity of tin liberated from the fused chloride is found by an easy calculation to be 57.9, which is almost exactly the chemical equivalent of tin.

Thus both the water and the chloride were broken up in proportions expressed by their respective equivalents.

The amount of electric force which wrenched asunder the constituents of the molecule of water was competent, and neither more nor less than competent, to wrench asunder the constituents of the molecules of the chloride of tin.

The fact is typical.

With the indications of his voltameter he compared the decompositions of other substances, both singly and in series.