of the picture, and next against those at right angles to it—they would oerspectively appear as figured, the true measures assumed upon the base line of the picture, as indicated by the line g f, for the perpendicular sides and which may be made to serve as well for those lying horizontal, by then simple adaptation thereto.
52. Let us presume this cube, or square box, to be exactly six feet high: it gives us, as it were, a scale, by the aid of which, and by an analogous operation, we can, upon the same principles, place any other object or figure, of any given height or size, on the perspective plan of our picture, with as much certainty as if it
6 1 '4L
Was this article helpful?