Dictionary of Greek and Roman antiquities. Ed. by William Smith. Illustrated by numerous engravings on wood.

CASTRA. CASTRA. 245
tain Hyginus, a gromatices or land surveyor, who rectly from Polybius, and those with regard-to the
flourished under Trajan and Hadrian, has left us a second, from Hyginus, unless when the contrary is
technical memoir on the art of castrametation as distinctly indicated. But while we endeavour to
practised in his own day. To these some might explain clearly all the parts of the camps themselves,
feel inclined to add the remarks of Vegetius, who we must refer to the article EXERCITUS for everylived during the reign of Valentinian, but for thing that concerns the different kinds of troops,
reasons which are stated elsewhere [EXERCITUS] their divisions, their discipline, and their officers.
it will be more safe to neglect him altogether.
We shall proceed to describe these two camps I. CAMP OF POLYBIUS.
in succession, it being understood that the leading The camp described by Polybius is such as
statements with regard to the first are taken di- would be formed at the close of an ordinary day's
(Fig. i.)
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