it has generally left it to the native village community to say what share each man of the village should have in the water; and the village authorities have accordingly laid down a series of most minute rules about it. But the peculiarity is that in no case do these rules 'purport to emanate from the personal authority of their author or authors, which rests on grounds of reason not on grounds of innocence and sanctity; nor do they assume to be dictated by a sense of equity; there is always, I am assured, a sort of fiction under which some customs as to the distribution of water are supposed to have emanated from a remote antiquity, although, in fact, no such artificial supply had ever been so much as thought of.' So difficult does this ancient race--like, probably, in this respect so much of the ancient world-find it to imagine a rule which is obligatory, but not traditional. The ready formation of custom-making groups in early society must have been greatly helped by the easy divisions of that society. Much of the world--all Europe, for example--was then covered by the primeval forest; men had only conquered, and as yet could only conquer, a few plots and corners from it. These narrow spaces were soon exhausted, and if numbers grew some of the new people must move. Accordingly, migrations were constant, and were necessary. And these migrations were not like those of modern times. There was no such feeling as binds even Americans who hate, or speak as if they hated, the present political England--nevertheless to 'the old home.' There was then no organised means of communication--no practical communication, we may say, between parted members of the same group; those who once went out from the parent society went out for ever; they left no abiding remembrance, and they kept no abiding regard. Even the language of the parent tribe and of the descended tribe would differ in a generation or two. There being no written literature and no spoken intercourse, the speech of both would vary (the speech of such communities is always varying), and would vary in different directions. One set of causes, events, and associations would act on one, and another set on another; sectional differences would soon arise, and, for speaking purposes, what philologists call a dialectical difference often amounts to real and total difference: no connected interchange of thought is possible any longer. Separate groups soon 'set up house;' the early societies begin a new set of customs, acquire and keep a distinct and special 'luck.'