Theatrum naturae et artis

Nor should the motion of pendula pendulums (a), which is excellently cultivated today, be neglected.
(a) Their structure is shown both as simple, with various phenomena, and also compound, that is, equipped with wheels and applied to clocks and other things.

The motion of tension is also useful for illustrating various experiments (a).
(a) Such as in lachrymae vitri glass tears/Prince Rupert's drops, which dissolve into tiny particles when their tip is broken, though they do not give this effect if they were previously fired. When enclosed in lead or clay and broken at the top, they seem to shatter into mere spirals. These and other phenomena can be illustrated by an extended chorda chalybea steel string/wire, both when it is heated and when it has not experienced fire.

III. On the Vacuum.

Various experiments are proposed, both regarding the vacuum disseminatum disseminated/interspersed vacuum (a) and the coacervatum collected/gathered vacuum. (b)
(a) Experiments commonly brought forward do not prove that it exists; such as if one takes ashes (warm ones serve this purpose better than cold) which absorb as much water as the vessel, when empty of them, would otherwise receive: a vas aqua plenum vessel full of water does not overflow because of a gold chain dropped into it, or even several coins added.