A treatise of the just interest of the kings of England, in their free disposing power, and the validity of their grants made to any of their subjects. And the history of acts of resumption and how they have been gain'd. Written at the Request of a Person of Honour' in the year 1657, by a Person Learn'd in the Laws, suppos'd my Lord Chief Justice Hales. To which is added, a prefatory discourse in answer to a discourse on grants and resumptions, and another of the exorbitant grants of W. III.