The Shelves · Natural science

Commentaries (on pneumatics, the water clock, the water organ)

Ὑπομνήματα

Known · Attestedin Alexandria?Conjectured · Our reconstructionour placement

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I · The entry, in his form

In the table of Natural science: “mechanics”

Conjectured · Our reconstructionour placement

Ctesibius of Alexandria

fl. c. 270 BCE. A barber's son of Alexandria who founded pneumatics: the force pump, a water clock with moving figures, and the water organ (hydraulis). His books are lost; Vitruvius and Philo of Byzantium describe his machines.

Commentaries

Ὑπομνήματα

Opening words not preserved.

Length: not counted

Above, his entry form, filled from what we know. Below, ours.

II · Does it survive? Where to read it

Lost

Known through Vitruvius, Philo of Byzantium, Hero and Athenaeus.

Was it in Alexandria?

Known · Attested

Written in Alexandria.

In the cupboard: written at Alexandria by a scholar or court writer a source places there.

Read it today

III · In the show

The show has not yet spoken of this work.

IV · Sources and the living entry

Ancient references (2)
  • Vitruvius 9.8.2-7; 10.7-8
  • Athenaeus 4.174b-e; 11.497b-e
Modern scholarship (2)
  • A. G. Drachmann, Ktesibios, Philon and Heron: A Study in Ancient Pneumatics (Copenhagen: Munksgaard, 1948).
  • G. E. R. Lloyd, Greek Science after Aristotle (London: Chatto & Windus, 1973).

Entry checked 31 Oct 2026 · no corrections · Suggest a correction ›

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Beside it in the cupboard