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 58
PROGRESSIVE DRAWING-BOOK. 21 the lines commonly used in perspective drawings; the square board is supposed to contain the paper to be drawnupon, the line a b, is called the base or ground line of the picture, the line which runs across the board endingat p, is the horizontal line, the point at a is…
Drawing
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