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1A machine is a combination of materials capable of moving great weights. It derives its power from that circular application of motion which the Greeks call κυκλικὴ κίνησις. The first species is for scaling (scansoria), which the Greeks call ἀκροβατικὸς. The second, wherein the wind is the moving power, is, by the Greeks, called πνευματικὸς. The third sort of machine is for draft, and they call it βάναυσος. The scaling machine is constructed for the purpose of ascending, without danger, to view works of considerable altitude, and is formed of long pieces of timber connected together by transverse pieces. The pneumatic machine is for the purpose of imitating the sounds of stringed and wind instruments, by means of a rush of air organically introduced.
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