The Venetian polymath and inventor Fausto Veranzio (1551–1617) examined da Vinci's parachute sketch and kept the square frame but replaced the canopy with a bulging sail-like piece of cloth that he came to realize decelerates a fall more effectively. A now-famous depiction of a parachute that he dubbed "Homo Volans" (Flying Man), showing a man parachuting from a tower, presumably St Mark's Campanile in Venice, appeared in his book on mechanics, "Machinae Novae" ("New Machines", published in 1615 or 1616), alongside a number of other devices and technical concepts.