'T will be the most advantageous, to have the Point of view on the Horizontal Line; and to have that Line, placed in a Level with the Eye of a Man, of ordinary Statue: Now that is to be esteemed the Horizontal Line, in the Painting, where the farthest part of the Level Earth terminates, or where the Eye loses the sight of the Plane; the Hills or rising Grounds, being out of the Question, and not confined by this rule.