The teaching of drawing : its aims and methods (1910)
Polak, Solomon, Quilter, Harry Charles · London : W.B. Clive, University Tutorial Press · leaf 118
g may be fol-lowed. Such an exerciseas the shading of a boxmay be carried out bypencil or crayon linesand is suitable forbrushwork. The planesof shade can be shownby using varying shadesof the same colour (see Arts. 51 and 54). As soon as the pupil can draw a simple object he shouldbe allowed to… … The object must be drawn carefully in outline, togetherwith the shadow. The darker portions may be boldlyshaded by parallel lines— (a) Curved, to follow the horizontal curvature, the lines 100 LIGHT AND SHADE.
Drawing
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