Tyrwhitt, R. St. John (Richard St. John), 1827-1895, Macdonald, A. (Alexander), 1839-1921 · Oxford, The Clarendon press · leaf 373
and themodel. One more point must be noticed before we begin oursketch : that is to say, the lateral direction of the picture-plane. The student has been told to consider PP parallelto the edge of the table, that being at right angles to theline which passes from the eye to about the centre of the… … Fig. 12. represents the plan of our object, and E the point of sight towhich the rays from O converge, we can be sure that thecone of rays may be cut by a plane in any position what-ever, as at I, 2, 3 : and in each case, by definition the sectionproduced would be the perspective of O, though they…
Painting -- Study and teaching · Perspective
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