_III. Castles and Villas.

A. Castles.

Pl. LXXX, No. 1 (P. V. fol. 39b; No. d'ordre 2282). The fortified
place here represented is said by Vallardi to be the_ "castello" _at
Milan, but without any satisfactory reason. The high tower behind
the_ "rivellino" _ravelin--seems to be intended as a watch-tower.

Pl. LXXX, No. 2 (MS. B, 23b). A similarly constructed tower probably
intended for the same use.

Pl. LXXX, No. 3 (MS. B). Sketches for corner towers with steps for a
citadel.

Pl. LXXX, No. 4 (W. XVI). A cupola crowning a corner tower; an
interesting example of decorative fortification. In this
reproduction of the original pen and ink drawing it appears
reversed.

B. Projects for Palaces.

Pl. LXXXI, No. 2 (MS. C. A, 75b; 221a, see No. 748). Project for a
royal residence at Amboise in France.

Pl. LXXXII, No. 1 (C. A 308a; 939a). A plan for a somewhat extensive
residence, and various details; but there is no text to elucidate
it; in courts are written the three names: