To explain these facts, Theodor Grotthus (1785-1822) in 1806 put forward an hypothesis which supposed that the opposite chemical constituents of an electrolyte interchanged partners all along the line between the electrodes when a current passed.
1 +hlx-+h2x2+h3x3-}-..., which remains true when the symbols a and h are interchanged, as is at once evident by writing -x for x.
13, interchanged in regard to Israel, on above theory)?
The cases so presented are interchanged by transmission to the opposite party.
Thus any pair of adjoining numbers can be interchanged, so that the numbers can be arranged in any order.