Second grade perspective, (theory and practice) : specially prepared for the use of art students (1893)
Dennis, H. J · London : Baillière, Tindall, and Cox · leaf 23
14 A. Lines appear to converge to points, appear to approach each other as they recede from the eye; and if they If a line be placed with its end immediately opposite the spectator’s were sufficiently produced they would appear to vanish in A B. … N.B.—There is an exception to Rule B., viz., when the parallel planes below it appear to tend upwards, while the joint a b, being on a level with are parallel to the picture-plane. (See Fic. 19.) the eye, appears to coincide with the horizon. N.B.—There is one exception to! Rule A, viz.,in the case…
Perspective
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