Error
Codex Atlanticus, 785b-r. - Studies for the Arno Canal, with notes on river banks and a fulling mill, water-driven sawmills and mills, spinning mills and floods, c. 1503. "This Arno innundates the land because the waters from Val d'Arno come faster than they are passed ownstream. And the 'Golfolina' does not let them through, because its valley is full of trees."
Courtesy of Alessandro Vezzosi