estates. An executory devise is a limitation by will of a future contingent interest in lands, contrary to the rules of limitation of contingent estate is in conveyances at law. When the limitation by will does not depart from those rules prescribed for the government of contingent remainders, it is, in that case, a contingent remainder, and not an executory devise. 2. An executory devise differs from a contingent remainder, in three material points. 1. It needs no particular estate to precede and support it; for example, a devise to A B, upon his marriage. 2. A fee may be limited after a fee, as in the case of a devise of land to C D, in fee, and if he dies without issue, or before the age of twenty-one, then to E F, in fee. 3. A term for years may be limited over after a life estate created in the same. 3. To prevent perpetuities, a rule has been adopted that the contingency must happen during the time of a life or lives in being and twenty-one years after, and the months allowed for gestation in order to reach beyond the minority of a person not in esse at the time of making the executory devise. 4. There are several kinds of executory devises; two relative to real estate, and one in relation to personal estate. 5. 1. When the devisor parts with his whole estate, but upon some contingency, qualifies the disposition of it, and limits an estate on that contingency. For example, when the testator devises to Peter for life, remainder to Paul, in fee, provided that if James should within three months after the death of Peter pay one hundred dollars to Paul, then to James in fee; this is an executory devise to James, and if he dies during the life of Peter, his heir may perform the condition. 6. 2. When the testator gives a future interest to arise upon a contingency, but does not part with the fee in the meantime; as in the case of a devise of the estate to the heirs of John after the death of John; or a devise to John in fee, to take effect six months after the testator’s death; or a devise to the daughter of John, who shall marry Robert within fifteen, years.7. 3. The executory bequest of a chattel interest is good, even though the ulterior legatee be not at the time in esse, and chattels so limited are protected from the demands of creditors beyond the life of the first taker, who cannot pledge them, nor dispose of them beyond his own life interest in them. But such a bequest, after an indefinite failure of issue, is bad.