Treatise index: the eye, perspective, and reflections in water
Chapter list — the ten offices of the eye, high and low viewpoints, things mirrored in water
This index leaf of the Codex Urbinas, headed 'Terza', lists chapter titles with page cross-references ('a car.'). The entries treat the foam of water, the ten offices of the eye all pertaining to painting, and practical matters — a painting of eternal varnish, a manner of coloring on cloth, and the smokes and dust of cities. A run of headings concerns perspective: the eye placed high or low seeing high and low objects, why all the species reaching the eye converge at a single point, things mirrored in still, turbid, and running water, and the nature of the transparent medium between eye and object. The leaf bears no drawing, only Melzi's scribal list of headings.
On this page
The ten offices of the eye and the point of convergence
Headings treat the ten offices of the eye, all pertaining to painting, the eye placed high seeing high and low objects and the eye placed low seeing low and high objects, and why the concourse of all the species coming to the eye is given to a single point.
Perspective, varnish, and coloring on cloth
Practical headings cover making a painting of eternal varnish, a manner of coloring on cloth, a precept of perspective in painting, and the diminutions of colors and bodies, alongside entries on the smokes and dust of cities.
Things mirrored in still, turbid, and running water
Three consecutive headings treat things mirrored in water, in turbid water, and in running water, followed by entries on the nature of the interposed medium and the effects of a medium bounded by a common surface.
The foam of water
The list opens with a heading devoted to the foam of water, treated among the subjects a painter must observe.