Studies of the mechanism of vision.

c. 25r

Map of the Arno valley.

cc. 22v-23r

Studies of sailing-ships.

c. 35r

Studies for a windmill.

c.43v

Studies for a mechanical viol and portrait of a musician.

c. 76r

Studies of stereometry.

Madrid Ms. II (BNM), c. 127r

ketch for the mould of the horse for the Sforza monument reversed in the melting-pit.

Madrid Ms. II (BNM), c. 149r

Machine for lowering the reversed mould of the Sforza monument into the pit.

Madrid Ms. II (BNM), c. 154v

Device for transporting the mould of the Sforza monument.

Madrid Ms. II (BNM), c. 155v

 Machine for transporting the mould of the Sforza monument and lowering it into the melting-pit.

Madrid Ms. II (BNM), c. 154r

Shape for the horse’s tail in the Sforza monument.

Madrid Ms. II (BNM), c. 145r

Study of the power of pulleys.

Codice di Madrid II (BNM), c. 99v

Map of the plain of Pisa and the mouth of the Arno.

Fortification studies for the rock of Piombino.

Madrid Ms. II (BNM), c. 37r