by John Marshall, McIver's Lessee v. Walker and Another…
“ But it is a general principle that the course and distance must yield to natural objects called for in the patent. All lands are supposed to be actually surveyed, and the intention of the grant is to convey the land according to that actual survey; consequently if marked trees and marked corners be found conformably to the calls of the patent, or if water-courses be called for in the patent, or mountains or any other natural objects, distances must be lengthened or shortened, and courses varied so as to conform to those objects. ”
