A Treatise on Painting/Chapter 179

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A Treatise on Painting
by Leonardo da Vinci, translated by John Francis Rigaud
The Difference of Superficies, in regard to Painting
4009414A Treatise on Painting — The Difference of Superficies, in regard to PaintingJohn Francis RigaudLeonardo da Vinci

Chap. CLXXIX.The Difference of Superficies, in regard to Painting.

Solid bodies are of two sorts: the one has the surface curvilinear, oval, or spherical; the other has several surfaces, or sides producing angles, either regular or irregular. Spherical, or oval bodies, will always appear detached from their ground, though they are exactly of the same colour. Bodies also of different sides and angles will always detach, because they are always disposed so as to produce shades on some of their sides, which cannot happen to a plain superficies[1].