Except in the singular institutions of Sparta, the wisest legislators have disapproved an agrarian law as a false and dangerous innovation. Among the Romans the enormous disproportion of wealth surmounted the ideal restraints of a doubtful tradition and an obsolete statute; a tradition that the poorest follower of Romulus had been endowed with the perpetual inheritance of two jugera; a statute which confined the richest citizen to the measure of five hundred jugera, or three hundred and twelve acres of land. The original territory of Rome consisted only of some miles of wood and meadow along the banks of the Tiber, and domestic exchange could add nothing to the national stock. But the goods of an alien or enemy were lawfully exposed to the first hostile occupier; the city was enriched by the profitable trade of war, and the blood of her sons was the only price that was paid for the Volscian sheep, the slaves of Britain, to the gems and gold of Asiatic kingdoms. In the language of ancient jurisprudence, which was corrupted and forgotten before the age of Justinian, these spoils were distinguished by the name of manceps or mancipium, taken with the hand; and whenever they were sold or emancipated, the purchaser required some assurance that they had been the property of an enemy and not of a fellow-citizen. A citizen could only forfeit his rights by apparent dereliction, and such dereliction of a valuable interest could not easily be presumed. Yet, according to the _Twelve Tables_, a prescription of one year for movables, and of two years for immovables, abolished the claim of the ancient master, if the actual possessor had acquired them by a fair transaction from the person whom he believed to be the lawful proprietor.[32] Such conscientious injustice, without any mixture of fraud or force could seldom injure the members of a small republic; but the various periods of three, of ten, or of twenty years, determined by Justinian, are more suitable to the latitude of a great empire. It is only in the term of prescription that the distinction of real and personal fortune has been remarked by the civilians; and their general idea of property is that of simple, uniform, and absolute dominion. The subordinate exceptions of use, of usufruct, of servitudes, imposed for the benefit of a neighbor on lands and houses, are abundantly explained by the professors of jurisprudence. The claims of property, as far as they are altered by the mixture, the division, or the transformation of substances, are investigated with metaphysical subtlety by the same civilians.