Illustrated Companion to the Latin Dictionary/Colluviarium

Illustrated Companion to the Latin Dictionary, and Greek Lexicon (Rich, 1849)

COLLUVIA'RIUM. A sort of well or opening formed at certain intervals in the channel of an aqueduct, for the purpose of procuring a free current of air along its course; and also, perhaps, to facilitate the operation of clearing away any foul deposits left by the waters, by affording a ready access to every part of the duct. Vitruv. viii. 8. 6.