Studies of two solids: a ribbed cone and a triangular pyramid
Two geometric solids in pen and ink; the leaf bears no writing.
A small paper fragment bearing two geometric solids drawn in pen and ink: at the left a cone or conical shell rendered with a series of parallel curved ribs, and at the right a triangular pyramid rising from an ellipse (a circle seen in perspective), its apex joined to the base corners by internal edges. The e-Leo catalogue records the sheet as without writing, and none is visible; only the drawings were recovered after restoration. Faint pen marks and an old inventory number appear near the lower edge.
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A ribbed cone and a triangular pyramid on an oval base
Two solids stand side by side. At the left a cone or conical shell is shown with parallel curved ribs suggesting a solid of revolution; at the right a triangular pyramid rises from an ellipse, its apex linked to the base vertices by internal edges. No lettering accompanies either figure.