Didascalia: Manuscript B, folio 49v

The folio contains three drawings in pen and sepia ink: a large crane in a moat with wooden crates; a slide with its load (not visible here); the plan of a ravelin (not visible here). The drawing of the crane, which may be dated to between 1487 and 1490, bears the following inscription: Da votare fossi "For emptying moats" (probably the moats of the Milan Castle). The phrase da votare fosi has been reiterated on the drawing by another writer.