3999978A Treatise on Painting — Of the naked BodyJohn Francis RigaudLeonardo da Vinci

Chap. LI.Of the naked Body.

The members of naked men who work hard in different attitudes, will shew the muscles more strongly on that side where they act forcibly to bring the part into action; and the other muscles will be more or less marked, in proportion as they co-operate in the same motion.