Faint verso, only partly visible before restoration
Recorded as devoid of autograph writing and drawing; mostly show-through from the recto
The e-Leo editors record this verso as only partly visible before restoration and devoid of its own writing and drawing, and no transcription was made; the faint images seen here are largely show-through from the densely worked recto (spirals, curves and wing-like sketches). The Ambrosiana's scholarly index nonetheless associates the sheet with faint geometric figures of 8- and 16-sided polygons and with mechanical sketches of water-lifting devices, a cart, and a bucket with a siphon.