Two categories of this interest are a conveyance to an unascertained person and a conveyance dependent on the occurrence of an event other than the natural termination of the preceding estate.
These interests were the subject of a Charles Fearne treatise after a controversy arising from Perrin v. Blake. Shifting executory interests could not exist prior to the 1536 Statute of Uses because of the rule of the destructability of these interests. Two categories of this interest are a conveyance to an unascertained person and a conveyance dependent on the occurrence of an event other than the natural termination of the preceding estate. For 10 points, name these future interests that are not vested.
These interests were the subject of a Charles Fearne treatise after a controversy arising from Perrin v. Blake.
{contingent remainder}