The Notebooks, vol 1

Clavis Sigillorum and Index of Manuscripts.--The author's intention to publish his MSS. (1).--The preparation of the MSS. for publication (2).--Admonition to readers (3).--The disorder in the MSS. (4).--Suggestions for the arrangement of MSS. treating of particular subjects (5--8).--General introductions to the book on painting (9--13).--The plan of the book on painting (14--17).--The use of the book on painting (18).--Necessity of theoretical knowledge (19, 20).--The function of the eye (21--23).--Variability of the eye (24).--Focus of sight (25).--Differences of perception by one eye and by both eyes (26--29).--The comparative size of the image depends on the amount of light (30--39).

II.

LINEAR PERSPECTIVE

General remarks on perspective (40--41).--The elements of perspective:--of the point (42--46).--Of the line (47--48).--The nature of the outline (49).--Definition of perspective (50).--The perception of the object depends on the direction of