Perspective, or, The art of drawing what one sees : explained and adapted to the use of those sketching from nature (1872)
Collins, W. H. (William Henry) · London : Longmans, Green · leaf 88
re of a square — viz. by looking up to the ceiling for the vanishing point V (fig. 27), of one of the diagonals, and joining this point to b, the corner of the picture, and producing this line to where it cuts v a in the point n, which is thus found to be one of the near corners of the frame. The… … following may be adopted : On the side of the picture a b, the length of which has been assumed,
Perspective · Drawing
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