The terms of the expression _Emptor familiae_ demand notice. "Emptor" indicates that the Will was literally a sale, and the word "familiae," when compared with the phraseology in the Testamentary clause in the Twelve Tables, leads us to some instructive conclusions. "Familia," in classical Latinity, means always a man's slaves. Here, however, and generally in the language of ancient Roman law, it includes all persons under his Potestas, and the Testator's material property or substance is understood to pass as an adjunct or appendage of his household. Turning to the law of the Twelve Tables, it will be seen that it speaks of _tutela rei suae_, "the guardianship of his substance," a form of expression which is the exact reverse of the phrase just examined. There does not therefore appear to be any mode of escaping from the conclusion, that, even at an era so comparatively recent as that of the Decemviral compromise, terms denoting "household" and "property" were blended in the current phraseology. If a man's household had been spoken of as his property we might have explained the expression as pointing to the extent of the Patria Potestas, but, as the interchange is reciprocal, we must allow that the form of speech carries us back to that primeval period in which property is owned by the family, and the family is governed by the citizen, so that the members of the community do not own their property _and_ their family, but rather own their property _through_ their family. At an epoch not easy to settle with precision, the Roman Praetors fell into the habit of acting upon Testaments solemnised in closer conformity with the spirit than the letter of the law. Casual dispensations became insensibly the established practice, till at length a wholly new form of Will was matured and regularly engrafted on the Edictal Jurisprudence. The new or _Praetorian_ Testament derived the whole of its impregnability from the _Jus Honorarium_ or Equity of Rome. The Praetor of some particular year must have inserted a clause in his inaugural Proclamation declaratory of his intention to sustain all Testaments which should have been executed with such and such solemnities; and, the reform having been found advantageous, the article relating to it must have been again introduced by the Praetor's successor, and repeated by the next in office, till at length it formed a recognised portion of that body of jurisprudence which from these successive incorporations was styled the Perpetual or Continuous Edict. On examining the conditions of a valid Praetorian Will they will be plainly seen to have been determined by the requirements of the Mancipatory Testament, the innovating Praetor having obviously prescribed to himself the retention of the old formalities just so far as they were warrants of genuineness or securities against fraud. At the execution of the Mancipatory Testament seven persons had been present besides the Testator. Seven witnesses were accordingly