Jamison, Alpha Pierce. [from old catalog] · New York, J. Wiley & sons; · leaf 170
cross the screen. If the brush contains tooinuch color the dots will not be clean-cut and often will runtogether and blur and blot. To shade lightly and uniformly, hold the screen some dis-tance away—three or four inches—from the paper; as the screenis moved closer to the paper the shading may yet… … PART II. CHAPTER IX. SKETCHING 171. Introductory.—The course in mechanical drawing asembodied in these notes is divided into two parts: (1) sketching,and (2) mechanical drawing. The work in sketching is a prelim-inary to the mechanical execution of the copies given, and isintended to thoroughly…
Mechanical drawing
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