The Notebooks of Leonardo Da Vinci Read Free

(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 the eye
(51).—Experimental proof of the existence of the pyramid of sight
(52—55).—The relations of the distance point to the vanishing
point (55—56).—How to measure the pyramid of vision (57).—The
production of the pyramid of vision (58—64).—Proof by experiment
(65—66).—General conclusions (67).—That the contrary is
impossible (68).—A parallel case (69).—The function of the eye, as
explained by the camera obscura (70—71).—The practice of
perspective (72—73).—Refraction of the rays falling upon the eye
(74—75).—The inversion of the images (76).—The intersection of
the rays (77—82).—Demonstration of perspective by means of a
vertical glass plane (83—85.)—The angle of sight varies with the
distance (86—88).—Opposite pyramids in juxtaposition (89).—On
simple and complex perspective (90).—The proper distance of objects
from the eye (91—92).—The relative size of objects with regard to
their distance from the eye (93—98).—The apparent size of objects
denned by calculation (99—106).—On natural perspective (107—109).
III.
SIX BOOKS ON LIGHT AND SHADE
    GENERAL INTRODUCTION.—Prolegomena (110).—Scheme of the books on
light and shade (111).—Different principles and plans of treatment
(112—116).—Different sorts of light (117—118).—Definition of
the nature of shadows (119—122).—Of the various kinds of shadows
(123—125).—Of the various kinds of light (126—127).—General
remarks (128—129).—FIRST BOOK ON LIGHT AND SHADE.—On the nature
of light (130—131).—The difference between light and lustre
(132—135).—The relations of luminous to illuminated bodies (136).
—Experiments on the relation of light and shadow within a room
(137—140).—Light and shadow with regard to the position of the
eye (141—145).—The law of the incidence of light
(146—147).—SECOND BOOK ON LIGHT AND SHADE.—Gradations of strength
in the shadows (148—149).—On the intensity of shadows as dependent
on the distance from the light (150—152).—On the proportion of
light and shadow (153—157).—THIRD BOOK ON LIGHT AND
SHADE.—Definition of derived shadow (158—159).—Different sorts of
derived shadows (160—162).—On the relation of derived and primary
shadow (163—165).—On the shape of derived shadows (166—174).—On
the relative intensity of derived shadows (175—179).—Shadow as
produced by two lights of different size (180—181).—The effect of
light at different distances (182).—Further complications in the
derived shadows (183—187).—FOURTH BOOK ON LIGHT AND SHADE.—On the
shape of cast shadows (188—191).—On the outlines of cast shadows
(192—195).—On the relative size of cast shadows (196.
197).—Effects on cast shadows by the tone of the back ground
(198).—A disputed proposition (199).—On the relative depth of
cast shadows (200—202).—FIFTH BOOK ON LIGHT AND
SHADE.—Principles of reflection (203. 204).—On reverberation
(205).—Reflection on water (206. 207).—Experiments with the mirror
(208—210).—Appendix:—On shadows in movement (211—212).—SIXTH
BOOK ON LIGHT