The teaching of drawing : its aims and methods (1910)
Polak, Solomon, Quilter, Harry Charles · London : W.B. Clive, University Tutorial Press · leaf 117
the technique is not easy and can only be used satis-factorily by advanced pupils. 119. First Exercises in Shading from Objects.— It is a good plan to begin the study of light and shade bya few lessons on rectangular objects. It is true there is adifficulty in drawing the outline correctly, but the… … beginners. Gradation in tone may be omitted in theearly exercises, and attention given mainly to the three orfour distinct planes of shade. LIGHT AND SHADE. 99
Drawing
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