A conveyance adapted to the case where a person seised of land in possession, reversion, or vested remainder . proposes to convey it to his wife, child, or kinsman. In its terms it consists of a covenant by him, in consideration of his natural love and affection, to stand seised of the land to the use of the intended transferee. Before the statute of uses this would merely have raised a use in favor of the covenantee; but by that act this use is converted into the legal estate , and the covenant therefore operates as a conveyance of the land to the covenantee. It is now almost obsolete. 1 Steph. Comm. 532; Williams, Seis. 145; French v. French. 3 N. H. 261; Jackson v. Swart. 20 Johns. (N. Y.) 85.