|The Fort Euryalus
|The fort Euryalus.
|Remains of the Fortification of Eryx
|Remains of the fortification of Eryx.
|Agger of Servius
|Illustration of a section of an agger.
|Chaldaean Plan of a Fortress
|The Chaldaean plan of a fortress.
|Assyrian Plan of a Fortress
|The Assyrian plan of a fortress (from a bas-relief in the British Museum).
|Assyrian Fortified City
|Plan and elevation of an Assyrian fortified city.