57 [XCVII].
Distance, 16 [III], 77 [XXXIII], 78 [XXXIV], 85 [XXXVII],
87 [XXXIX], 103 [LIV], 128 [LXXVII].
Distorted perspective, How to correct, 118 [LXVII].
Dome, 163 [CIII] - 167 [CV].
Double Cross, 218 [CXLII].

E
Ellipse, 145 [LXXXIX], 146 [XC], 147 [168].
Elliptical Arch, 207 [CXXXII].

F
Farningham, 95 [103].
figures on descending plane, 92 [XLIV], 93 [100],
94 [102], 95 [XLV].
" " an inclined plane, 88 [XL].
" " a level plane, 70 [79], 71 [XXVIII], 72 [81],
73 [82], 74 [XXX], 75 [XXXI].
" " uneven ground, 90 [XLII], 91 [XLIII].

G
Geometrical and Perspective figures contrasted, 46 [XII] - 48.
" plane, 99 [L].
Giovanni da Pistoya, Sonnet to, by Michelangelo, 60.
Great Pyramid, 190 [CXXII].

H
Hexagon, 177 [CXIV], 183 [CXVII], 185 [CXIX].
Hogarth, 9.
Honfleur, 83 [92], 142 [163].
Horizon, 3, 4, 15 [II], 20, 59 [XX], 60 [66].
Horizontal line, 13 [I], 15 [II].
Horizontals, 30, 31, 36.

I
Inaccessible vanishing points, 77 [XXXII], 78 [XXXIII],
136, 140 - 144.
Inclined plane, 33, 118, 213 [CXXXVIII], 244 [XLV], 245 [XLVI].
Interiors, 62 [XXI], 117 [LXVI], 118 [LXVII], 128.

J
Japanese Art, 11.
Jesuit of Paris, Practice of Perspective by, 9.

K
Kiosk, Application of Hexagon, 185 [XCIX].
Kirby, Joshua, Perspective made Easy (?), 9.

L
Ladder, Step, 212 [CXXXVII], 216 [CXL].
Landscape Perspective, 74 [XXX].
Landseer, Sir Edwin, 1.
Leonardo da Vinci, 1, 61.
Light, Observations on, 253 [CLXIII].
Light-house, 84 [XXXVII].
Long distances, 85 [XXXVIII], 87 [XXXIX].

M
Measure distances by square and diagonal, 89 [XLI],
128 [LXXVII], 129.
" vanishing lines, How to, 49 [XIV], 50 [XV].
Measuring points, 106 [LVII], 113.
" point O, 108, 109, 110 [LX].
Mental Perspective, 269 [CLXX].
Michelangelo, 5, 57, 58, 60.

N
Natural Perspective, 12, 82 [91], 95 [103], 142 [163], 144 [164].
New Method of Angular Perspective, 133 [LXXX], 134 [LXXXI],
135 [LXXXII], 141 [LXXXVI], 215 [CXXXIX], 219.
Niche, 164 [CIV], 165 [193], 250 [CLX].

O
Oblique Square, 139 [LXXXV].
Octagon, 172 [CIX] - 175 [202].
O, measuring point, 110 [LX].
Optic Cone, 20 [IV].

P
Parallels and Diagonals, 124 [LXXIII] - 128 [LXXVI].
Paul Potter, cattle, 19 [16].
Paul