Hollow arrow, jointed lance, and screwable tubular fittings
Questions on projectile motion beside coupled tubes and scaffolding
Written with the page reversed, the sheet poses two questions on motion and percussion. If the heaviest part of a body guides its motion, what would a hollow arrow carrying quicksilver do when shot upward, and why does a lance built of interlocking segments strike harder than one of a single piece? Around the text are drawings of coupled tubular elements that screw together and an X-braced scaffolding.
On this page
Hollow arrow weighted with quicksilver
If the heaviest part of bodies becomes the guide of their motion, the note asks what path and office a hollow arrow will perform when it carries a portion of quicksilver inside and is shot upward. The query treats the arrow as a test of how a shifting internal weight governs flight.
Segmented lance jointed like a toothed box
A lance is to be made of pieces fitted together in the manner of a toothed box. The note asks why such a jointed lance delivers a greater blow than a lance of a single piece, framing it as a problem of percussion.
Screwable, assemblable tubular elements
The upper drawings show cylindrical tube sections coupled end to end, designed to screw together into longer assemblies. The caption names them as screwable and composable tubular elements. No descriptive text is given beyond the caption.
X-braced scaffolding
A cross-braced lattice frame is sketched at the right, captioned as scaffolding. The diagonal bracing is drawn in two adjacent bays. It accompanies the tubular fittings without further text.