But, though all this must be allowed, there are several considerations which render it unlikely that the feudal form of ownership was directly suggested by the Roman duplication of domainial rights. The distinction between legal and equitable property strikes one as a subtlety little likely to be appreciated by barbarians; and, moreover, it can scarcely be understood unless Courts of Law are contemplated in regular operation. But the strongest reason against this theory is the existence in Roman Law of a form of property--a creation of Equity, it is true--which supplies a much simpler explanation of the transition from one set of ideas to the other. This is the Emphyteusis, upon which the Fief of the middle ages has often been fathered, though without much knowledge of the exact share which it had in bringing feudal ownership into the world. The truth is that the Emphyteusis, not probably as yet known by its Greek designation, marks one stage in a current of ideas which led ultimately to feudalism. The first mention in Roman history of estates larger than could be farmed by a Paterfamilias, with his household of sons and slaves, occurs when we come to the holdings of the Roman patricians. These great proprietors appear to have had no idea of any system of farming by free tenants. Their _latifundia_ seem to have been universally cultivated by slave-gangs, under bailiffs who were themselves slaves or freedmen; and the only organisation attempted appears to have consisted in dividing the inferior slaves into small bodies, and making them the _peculium_ of the better and trustier sort, who thus acquired a kind of interest in the efficiency of their labour. This system was, however, especially disadvantageous to one class of estated proprietors, the Municipalities. Functionaries in Italy were changed with the rapidity which often surprises us in the administration of Rome herself; so that the superintendence of a large landed domain by an Italian corporation must have been excessively imperfect. Accordingly, we are told that with the municipalities began the practice of letting out _agri vectigules_, that is, of leasing land for a perpetuity to a free tenant, at a fixed rent, and under certain conditions. The plan was afterwards extensively imitated by individual proprietors, and the tenant, whose relation to the owner had originally been determined by his contract, was subsequently recognised by the Praetor as having himself a qualified proprietorship, which in time became known as an Emphyteusis. From this point the history of tenure parts into two branches. In the course of that long period during which our records of the Roman Empire are most incomplete, the slave-gangs of the great Roman families became transformed into the _coloni_, whose origin and situation constitute one of the obscurest questions in all history. We may suspect that they were formed partly by the elevation of the slaves, and partly by