Blank verso with show-through of technical studies
Curatorial note: invisible before restoration, without writing or drawing on this side
The source notes that this side of the leaf was invisible before restoration and bears no writing or drawing of its own. Only faint show-through from the recto can be made out, echoing the furnace and mechanical studies on the other face. No autograph text is present on this side.
On this page
Show-through of the recto's technical sketches
The source records this side as blank. Only faint offset from the recto is visible, giving ghost outlines of the furnace, screw mechanisms and spring assemblies drawn on the other face.