Canal Outlet, Pump and Conduit, and a Water Vortex
Red-chalk sketches: a mechanical apparatus over a canal and a descending whirl of water
This red-chalk (sanguigna) page carries no continuous prose, only the holding editors' descriptive captions. At the top a structure is drawn in perspective, read as a stretch of canal with a lateral outlet for the water; at the center a mechanical apparatus of wheels and rods is tentatively identified as a pump with a conduit. Below, a boldly shaded column of water spirals downward as a vortex. The Bibliothèque de l'Institut oval stamp and the folio number 23 appear near the fore-edge.
On this page
Mechanical apparatus: pump and conduit (?)
A device of paired wheels on an axle with connecting rods is sketched at the center of the sheet. The editorial caption reads it as mechanical equipment, a pump and conduit, though with a query.
Stretch of canal with lateral water outlet
A structure drawn in perspective across the top of the page is described as a length of canal from which the water exits laterally. It sits above the mechanical apparatus and the vortex.
Descending water vortex
A heavily shaded spiral column is drawn in red chalk in the lower half of the sheet, representing water twisting downward in a vortex. It is the most emphatic drawing on the page.