Burn, Robert Scott · London : Ingram, Cooke, and Co. · leaf 32
this material has a rough surface, which takes thepencil easily, and will bear rubbing out well; it is, moreover, cheap, which—to a pupil who is apt to make many attempts before he succeeds inmaking a perfect copy—is a matter of some importance. A few black-lead pencils will be also requisite; some… … fig 1. %• 2. which are to be shaded, the outlines must first be put in before any at-tempt to shade is made. The pupil should endeavour to produce the properdegree of shade at one operation, without having occasion to go over ordarken it afterwards. This retouching spoils the effect of clearness…
Drawing · Wood-engraving
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