29. Detail of Fig.30, showing Vulcan, Thetis and the Cyclops
Attributed works:
30. Mount Etna, with the theatre and pedestals erected in the piazzo del Duomo, Milan, designed by Francesco Maria Richini, drawn by Carlo Biffi and engraved by Cesare Bassano. 1630 (From Emanuele Tesauro: Racconto delle publiche allegrezze fatte dalla città di Milano alli IV febraro MDCXXX per la felice Nascita del Sereniss. Primogenito di Spagna Baldasar Carlo Dominico, appresso gli heredi di Melchior Malatesta, Milan 1630)
Attributed works:
31. Studies of buckler-type shields (rotelle), burning balls, an armoured waggon and an architectural drawing, by Leonardo da Vinci. Here dated 1485-87. Fol.59r of Manuscript B (Institut de France, Paris)
Attributed works:
32. Studies of burning balls, two figure studies (not by Leonardo) and annotations, by Leonardo da Vinci. Here dated 1485-87. Fol.4r of Manuscript B (Institut de France, Paris)
Attributed works:
33. Studies of ballistics, by Leonardo da Vinci. Here dated 1485-87 (Ecole nationale supérieure des beaux-arts, Paris, EBA 423)
Attributed works:
34. Study for a temporary structure or triumphal arch, by Leonardo da Vinci. Here dated 1487-90. Fol.22r of the Codex Trivulziano (Biblioteca Trivulziana, Milan)