The book on celestial phenomena by Aristoteles, in Italian [Footnote 25: Meteora. By this Leonardo means no doubt the four books. He must refer here to a MS. translation, as no Italian translation is known to have been published (see No. 1477 note).],—
Try to get Vitolone, which is in the library at Pavia [Footnote 26: Vitolone see No. 1506, note.
Libreria di Pavia. One of the most famous of Italian libraries. After the victory of Novara in April 1500, Louis XII had it conveyed to France, 'come trofeo di vittoria'!] and which treats of Mathematics,—He had a master [learned] in waterworks and get him to explain the repairs and the costs, and a lock and a canal and a mill in the Lombard fashion.
A grandson of Gian Angelo's, the painter has a book on water which was his fathers.
Paolino Scarpellino, called Assiolo has great knowledge of water works.
[Footnote 12: Sco Lorenzo. A church at Milan, see pp. 39, 40 and 50.]
[Footnote 13. 24: Gruppi. See Vol. I p. 355, No. 600, note 9.]
[Footnote 16: The Portinari were one of the great merchant- families of Florence.]
1449.
Francesco d'Antonio at Florence.