An Essay Towards a New Theory of Vision | Page 2

mistake 40 A query proposed, by Mr.
Molyneux in his DIOPTRICS, considered 41 One born blind would not
at first have any IDEA of distance by sight 42 This not agreeable to the
common principles 43 The proper objects of sight, not without the
mind, nor the images of any thing without the mind 44 This more fully
explained 45 In what sense we must be understood to see distance and
external things 46 Distance, and things placed at a distance, not
otherwise perceived by the eye than by the ear 47 The IDEAS of sight
more apt to be confounded with the IDEAS of touch than those of
hearing are 48 How this comes to pass 49 Strictly speaking, we never
see and feel the same thing 50 Objects of SIGHT twofold, mediate and

immediate 51 These hard to separate in our thoughts 52 The received
accounts of our perceiving magnitude by sight, false 53 Magnitude
perceived as immediately as distance 54 Two kinds of sensible
extension, neither of which is infinitely divisible 55 The tangible
magnitude of an OBJECT steady, the visible not 56 By what means
tangible magnitude is perceived by sight 57 This further enlarged on 58
No necessary connection between confusion or faintness of appearance,
and small or great magnitude 59 The tangible magnitude of an
OBJECT more heeded than the visible, and why 60 An instance of this
61 Men do not measure by visible feet or inches 62 No necessary
connection between visible and tangible extension 63 Greater visible
magnitude might signify lesser tangible magnitude 64 The judgments
we make of magnitude depend altogether on experience 65 Distance
and magnitude seen as shame or anger 66 But we are prone to think
otherwise, and why 67 The moon seems greater in the horizon than in
the meridian 68 The cause of this phenomenon assigned 69 The
horizontal moon, why greater at one time than another. 70 The account
we have given proved to be true 71 And confirmed by the moon's
appearing greater in a mist 72 Objection answered 73 The way wherein
faintness suggests greater magnitude illustrated 74 Appearance of the
horizontal moon, why thought difficult to explain 75 Attempts towards
the solution of it made by several, but in vain 76 The opinion of Dr.
Wallis 77 It is shown to be unsatisfactory 78 How lines and angles may
be of use in computing apparent magnitudes 79 One born blind, being
made to see, what judgment he would make of magnitude 80 The
MINIMUM VISIBLE the same to all creatures 81 Objection answered
82 The eye at all times perceives the same number of visible points 83
Two imperfections in the VISIVE FACULTY 84 Answering to which,
we may conceive two perfections 85 In neither of these two ways do
microscopes improve the sight 86 The case of microscopical eyes,
considered 87 The sight, admirably adapted to the ends of seeing 88
Difficulty concerning erect vision 89 The common way of explaining it
90 The same shown to be false 91 Not distinguishing between IDEAS
of sight and touch, cause of mistake in this matter 92 The case of one
born blind, proper to be considered 93 Such a one might by touch attain
to have IDEAS of UPPER and LOWER 94 Which modes of situation
he would attribute only to things tangible 95 He would not at first sight

think anything he saw, high or low, erect or inverted 96 This illustrated
by an example 97 By what means he would come to denominate visible
OBJECTS, high or low, etc. 98 Why he should think those OBJECTS
highest, which are painted on the lowest part of his eye, and VICE
VERSA 99 How he would perceive by sight, the situation of external
objects 100 Our propension to think the contrary, no argument against
what has been said 101 Objection 102 Answer 103 An object could not
be known at first sight by the colour 104 Nor by the magnitude thereof
105 Nor by the figure 106 In the first act of vision, no tangible thing
would be suggested by sight 107 Difficulty proposed concerning
number 108 Number of things visible, would not at first sight suggest
the like number of things tangible 109 Number the creature of the mind
110 One born blind would not at first sight number visible things as
others do 111 The situation of any object determined with respect only
to objects of the same sense 112 No distance, great or small, between a
visible and tangible thing 113 The not observing this, cause of
difficulty in erect vision 114 Which otherwise includes nothing
unaccountable 115 What is meant by the picture being inverted 116
Cause of mistake in this matter 117 Images in the eye, not pictures