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quite inconceivable to me why M. RAVAISSON, in a note to his French
translation of this simple passage should have remarked: Il est
clair que c'est par erreur que Leonard a ècrit per esser visino au
lieu de per non esser visino. (See his printed ed. of MS. A. p.
3
8.)]; but if these spaces are marked on the vertical plane n o
the space o v will be seen at o r, and in the same way the space
v x will appear at r q. And if you carry this out in any place
where you can walk round, it will look out of proportion by reason
of the great difference in the spaces o r and r q. And this
proceeds from the eye being so much below [near] the plane that the
plane is foreshortened. Hence, if you wanted to carry it out, you
would have [to arrange] to see the perspective through a single hole
which must be at the point m, or else you must go to a distance of
at least 3 times the height of the object you see. The plane o p
being always equally remote from the eye will reproduce the objects
in a satisfactory way, so that they may be seen from place to place.
8
7.
How every large mass sends forth its images, which may diminish
through infinity.
The images of any large mass being infinitely divisible may be
infinitely diminished.
8
8.
8
7
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