Elements of Science And Art Being a Familiar Introduction to Natural Philosoph
Elements of Science And Art Being a Familiar Introduction to Natural Philosoph
John Imison
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This is different from com- mon chalk, being much harder. Tobacco-pipe clay will do very well instead of it. Red chalk is a fossil substance of a red ochrey colour, which is sometimes used for drawing, but not so much now as it formerly was, the black being preferred ; however, the red being cheaper, will do very well for some purposes. Drawing paper. Any paper that will do for writing will do for drawing ; but as the wire-marks in common writing paper are injurious, paper made without any wire...-marks, called wove paper, is generally used for this purpose. It is made of various sizes and thickness. Middle tint paper is paper of a brownish or of a grey colour, which is used for drawing upon with black and white chalk. Being of a dark colour, the strokes of the white chalk are distinctly seen ; and it saves a great deal of time in making draw- ings, as the tint of the paper answers for the half shadow, so that all that is necessary to be done, is to lay in the dark shadows and the lights.
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