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of the circumferences of the circles of these wheels. He became
aware of them by the animals that moved the vehicles. But he did not
discern that this was a means of finding a square equal to a circle.
This was first done by Archimedes of Syracuse, who by multiplying
the second diameter of a circle by half its circumference produced a
rectangular quadrilateral equal figure to the circle [Footnote 10:
Compare No. 1475.].
[
Footnote: Vitruvius, see also Nos. 1113 and 343.]
1
505.
Virgil says that a blank shield is devoid of merit because among the
people of Athens the true recognition confirmed by testimonies ...
[Footnote: The end of the text cannot be deciphered.]
1
506.
In Vitolone there are 805 conclusions [problems] in perspective.
[Footnote: (Witelo, Vitellion, Vitellon) Vitellione. E da vedersi
su questo ottico prospettico del secolo XIII Luca Pacioli, Paolo
Lomazzo, Leonardo da Vinci, ecc. e fra i moderni il Graesse, il
Libri, il Brunet, e le Memorie pubblicate dal principe Boncompagni,
e 'Sur l' orthographe du nom et sur la patrie de Witelo (Vitellion)
1187
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