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Von Baer's standard seems the most widely applicable and the best, namely, the amount of differentiation of the parts of the same organic being, in the adult state, as I should be inclined to add, and their specialisation for different functions; or, as Milne Edwards would express it, the completeness of the division of physiological labour.

Country life was marked with the rigidity of a hard provincialism. All this, however, is rapidly changing. A city hammers and polishes its denizens into a defined model: it worships standardisation; but the country encourages differentiation, it loves new types. Thus it is that so many great and original men have lived their youth upon the land.

We find, in short, such evidence of the slow and scarcely sensible mutations of specific forms, as we have the right to expect. We have seen in the fourth chapter that the degree of differentiation and specialisation of the parts in organic beings, when arrived at maturity, is the best standard, as yet suggested, of their degree of perfection or highness.

"We want sensible codes, adapted to our manner of being without differentiation of races and without odious privileges contrary to the principle of equality before the law.

This theory accords no peculiar character to light beyond that accorded to other physical phenomena such as sound. There is no ground for such a differentiation. Some objects we know by sight only, and other objects we know by sound only, and other objects we observe neither by light nor by sound but by touch or smell or otherwise. The velocity of light varies according to its medium and so does that of sound. Light moves in curved paths under certain conditions and so does sound. Both light and sound are waves of disturbance in the physical characters of events; and (as has been stated above, p.

Still differentiation would be largely at work. Without frequent intercourse, frequent interchange of women as the great factor in that intercourse, the tribes and bands of mankind would still go on separating, would develop dialectic and customary, if not physical and moral differences. It was no longer a case of pools perhaps, but they were still in lakes.

However this may be, there comes at an age which varies somewhat in different races and individuals, a period critical to both sexes, in which the factors of sex differentiation, hitherto more or less latent, begin conspicuously to assert themselves. Here, plainly, is the dawn of womanhood, and here, in our consideration of woman the individual, we must make a start.

In this way, new deities were apparently created even at an advanced stage of the Babylonian religion, but deities that differed totally from those that are characteristic of the earlier periods. The differentiation of the arts, and the assignment of a patron to each branch, reflect the thoughts and the aspirations of a later age.

If differences there were in Franklin Kane, they were to be sought for, they did not present themselves; and he himself would have been the last to be conscious of them. He didn't think of himself as differentiated; he didn't desire differentiation.

Again we may perhaps interpose a period of ten thousand years' comparative repose. For the differentiation of the families Simiidæ and Cebidæ so very much more distinct and different than any two genera of either family a period ten times greater should, I believe, be allowed than that required for the evolution of the subordinate groups.