Within the walls were an amphitheatre, a theatre, public baths, a structure covering nearly 2 acres and interpreted as a granary or (perhaps more correctly) as a cistern,[78] and private houses as yet unexplored.

Beneath the chief streets were sewers, by which indeed these streets were mainly traced.
[77] C.Promis, _Antichita di Aosta_ (Torino, 1862), with plan, plate 3, dating from 1838; _Notizie degli Scavi_, 1899, p.

108, with a later plan, but lacking a scale; Nissen, _Ital.
Landeskunde_, ii.

171.
[78] Durm _Baukunst der Roemer_, p.

458.
[Illustration: FIG.16.