commonwealth may require, preserves both the primeval institution and the natural limitation to which I conceive it to have been subject. In every relation of life in which the collective community might have occasion to avail itself of his wisdom and strength, for all purposes of counsel or of war, the filius familias, or Son under Power, was as free as his father. It was a maxim of Roman jurisprudence that the Patria Potestas did not extend to the Jus Publicum. Father and son voted together in the city, and fought side by side in the field; indeed, the son, as general, might happen to command the father, or, as magistrate, decide on his contracts and punish his delinquencies. But in all the relations created by Private Law, the son lived under a domestic despotism which, considering the severity it retained to the last, and the number of centuries through which it endured, constitutes one of the strangest problems in legal history. The Patria Potestas of the Romans, which is necessarily our type of the primeval paternal authority, is equally difficult to understand as an institution of civilised life, whether we consider its incidence on the person or its effects on property. It is to be regretted that a chasm which exists in its history cannot be more completely filled. So far as regards the person, the parent, when our information commences, has over his children the _jus vitae necisque_, the power of life and death, and _a fortiori_ of uncontrolled corporal chastisement; he can modify their personal condition at pleasure; he can give a wife to his son; he can give his daughter in marriage; he can divorce his children of either sex; he can transfer them to another family by adoption; and he can sell them. Late in the Imperial period we find vestiges of all these powers, but they are reduced within very narrow limits. The unqualified right of domestic chastisement has become a right of bringing domestic offences under the cognisance of the civil magistrate; the privilege of dictating marriage has declined into a conditional veto; the liberty of selling has been virtually abolished, and adoption itself, destined to lose almost all its ancient importance in the reformed system of Justinian, can no longer be effected without the assent of the child transferred to the adoptive parentage. In short, we are brought very close to the verge of the ideas which have at length prevailed in the modern world. But between these widely distant epochs there is an interval of obscurity, and we can only guess at the causes which permitted the Patria Potestas to last as long as it did by rendering it more tolerable than it appears. The active discharge of the most important among the duties which the son owed to the state must have tempered the authority of his parent if they did not annul it. We can readily persuade ourselves that the paternal despotism could not be brought into play without great