With the Romans, a slave passed indeed for a human being, but one without any personal rights; in the legal sense he had no caput, no legal rights, no legal capacity.9 He was in the potestas (power) of the master; but in a different manner from the case of children, in the power of the head of a family—with the slave it is a potestas dominica, dominium.10 In consequence of this dominium, the master had entire right of property in the slave, and could do just as he pleased with his person and his