Codex Leicester, 15r. - Page with twenty-seven studies ("26 cases") and five drawings in the margin on the confluences of lesser watercourses with the Arno River, with three diagrams on the level of equilibrium and an added note (with three figures) on experiments with steam. The first figure shows how the Rifredi flows into the Arno, whose line of current runs close to the opposite bank. The second figure represents the confluence of the Mugnone (see the "anatomy" of this section of the river on folios 148v and 149r of the Codex Arundel, and on RL 12677, 12678, dating from 1503). The third instead compares the positions of three different tributaries, one of which, the Ombrone (in the Golfolina), enters at an acute angle, unfavourable, resulting in a "maximum backflow" at its mouth. Similar demonstrations are found on folio 18B - 18v, for the Mensola torrent in particular.
© Alessandro Vezzosi
Last update 06/mar/2008