The British drawing-book : or, the art of drawing with accuracy and beauty, containing a series of progressive lessons on drawing landscape scenery, marine views, architecture, animals, the human figure, &c. &c. also, a complete system of practical perspective, illustrated with numerous practical subjects (1845)
Whittock, N. (Nathaniel), 1791-1860 · London : Published for the proprietor · leaf 136
e edge, otherwise the towers will lose their rotundity and appear harsh at the outline.Thelearner is by this time so well grounded in the rudiments of perspective, that the rules applicable to thissubject need not be pointed out. The lines forming the sky should run parallel to each other in a wavy… … V Plate 40.
Drawing
Internet Archive · Getty Research Institute · Public Domain Mark 1.0. Free to use for anything.