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152 it as a general prohibition against the succession of the half-blood, and extended it to consanguineous brothers, that is to sons of the same father by different wives. In all the literature which enshrines the pretended philosophy of law, there is nothing more curious than the pages of elaborate sophistry in which Blackstone attempts to explain and justify the exclusion of the half-blood.

It may be shown, I think, that the Family, as held together by the Patria Potestas, is the nidus out of which the entire Law of Persons has germinated. Of all the chapters of that Law the most important is that which is concerned with the status of Females. It has just been stated that Primitive Jurisprudence, though it does not allow a Woman to communicate any rights of Agnation to her descendants, includes herself nevertheless in the Agnatic bond. Indeed, the relation of a female to the family in which she was born is much stricter, closer, and more durable than that which unites her male kinsmen. We have several times laid down that early law takes notice of Families only; this is the same thing as saying that it only takes notice of persons exercising Patria Potestas, and accordingly the only principle on which it enfranchises a son or grandson at the death of his Parent, is a consideration of the capacity inherent in such son or grandson to become himself the head of a new family and the root of a new set of Parental