470. -—Fee-farm rent. The rent reserved on granting a fee-farm. It might be one-fourth the value of the land, according to Cowell; one-third, accormne to other authors. Spelman; Termes de la Ley: 2 Bl. Comm. 48. Fee-farm rent is a rent-charge issuing out of an estate in fee; a perpetual rent reserved on a conveyance in fee-simple. De Peyster v.