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Date: Sat, 10 Nov 2001 14:28:11 -0800
To: classics@u.washington.edu
From: David Lupher <dlupher@ups.edu>
Subject: RE: water clocks

<fontfamily><param>Arial</param><color><param>0000,0000,FFFF</param><smaller>George
Pesely writes:


<excerpt>There is a 5th-century terra cotta water clock (klepsydra) in
the Agora Museum (Stoa of Attalos)

in Athens, and a description of how they were used in court in
Aristotle, Constitution of Athens 67.2.

</excerpt>

</smaller></color></fontfamily>For a photo of it---and also of a model
of it in use, see figs. 25

and 26 of Mabel Lang's ASCSA Agora "Picture Book" #4, "The Athenian

Citizen."  The text reads: 

	These clay vessels, which were made in a variety of sizes

	to measure various lengths of time, could be filled only up

	to the overflow hole just below the rim.  When the speech

	began, a slave appointed to this task pulled the plug from

	the small bronze tube in the base.  As the klepsydra emptied

	and the pressure decreased, the flow of water changed somewhat

	in direction so that the speaker could with practice estimate

	the time left to him.


David Lupher

Classics Dept.

Univ. of Puget Sound

.