“for when once you fix your wrist in a firm position, the carpus bones, or seven bones of the wrist, will act as a pair of compasses, and one
of the bones, properly named the os. lunare, you perceive acts on an apex, between the two bones of the arm, viz., 1} the ulna and c the radius; for instance, you rest your arm on c, and through the elasticity of the tendons, sinews, and muscles, you are almost able to strike the annexed diagram, fig. 1, without moving the arm. You will perceive the principle by fig. 2 ; here I have placed an anatomical hand, holding a crayon, which shews by commencing at or about d, continuing your segment until you arrive at the diagonal line, e ; from the point a you strike an arc of sixty degrees, and by extending your fingers from that point, you immediately form a concave line adjoining, or more technically termed a cyma recta or an ogee for mouldings. I allude in this manner that your freedom of hand is obtained on this principle by prac”
Excerpt From: Page, James, designer. “Guide for drawing the acanthus, and every description of ornamental foliage;.” London, B. Quaritch, 1886. iBooks.
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