Edificij et machine, Martini, Francesco di Giorgio, 1439-1501, brown ink and wash, ca. 1475-ca. 1480, The volume comprises 103 drawings by Francesco di Giorgio Martini and his assistants, featuring machines and devices for lifting columns and other heavy weights, schemes for transporting water, and mechanisms for milling and moving boats. There are also a few drawings showing how people could walk or float on water standing on inflatable containers and using an oar to propel themselves.