In fendal law. Escheat Is an obstruction of the course of descent, and consequent determination of the tenure, by some unforeseen contingency, in which case the land naturally results back, by a kind of reversion, to the original grantor, or lord of the fee. 2 Bl. Comm. 15; wallace v. Harin-stad, 44 Pa. 501; Marshall v. Lovelass, 1 N. O. 445