Conversely, rights spring from certain facts supposed to be true of the person entitled to such rights. Where these facts are of such a nature that they can be made successively true of different persons, as in the case of the occupation of land, the corresponding rights may be successively enjoyed. But when the facts are past and gone, such as the giving of a consideration and the receiving of a promise, there can be no claim to the resulting rights set up by any one except the party of whom the facts were originally true--in the case supposed, the original contractee,--because no one but the original contractee can fill the situation from which they spring. It will probably be granted by English readers, that one of the essential constituent facts consists in a certain relation to a material object. But this object may be a slave, as well as a horse; /1/ and conceptions originated in this way may be extended by a survival to free services. It is noticeable that even Bruns, in the application of his theory, does not seem to go beyond cases of status and those where, in common language, land is bound for the services in question, as it is for rent. Free services being [240] so far treated like servile, even by our law, that the master has a right of property in them against all the world, it is only a question of degree where the line shall be drawn. It would be possible to hold that, as one might be in possession of a slave without title, so one might have all the rights of an owner in free services rendered without contract. Perhaps there is something of that sort to be seen when a parent recovers for the seduction of a daughter over twenty-one, although there is no actual contract of service. /1/ So, throughout the whole course of the canon law and in the early law of England, rents were regarded as so far a part of the realty as to be capable of possession and disseisin, and they could be recovered like land by all assize. /2/