Vallo : libro cõtinente appertenentie ad capitanii, retenere & fortificare una citta cõ bastioni, con noui artificii de fuoco aggionti, come nella tabola appare, & de diverse sorte poluere, et de expugnare una citta cõ põti, scale, argani, trõbe, trẽciere, artegliarie, caue, dare auisamenti senza messo allo amico, fare ordinanze, battaglioni, et ponti de disfida con lo pingere, opera molto utile con la experientia de larte
Vallo is a 1528 Venetian military treatise by Battista della Valle, printed in Venice by Piero de Rauani, on fortifying and besieging cities with bastions, gunpowder, and siege engines. Its woodcuts show fascine-filled earthworks, timber palisade lattices, a bastioned fort beside a winding trench, and a cannon-lined trench, which suggest geometric patterns for layered hatching, zigzag line rhythms, and stacked cylindrical forms for a designer's study of structure.
