The interior of the pavilion looked like a museum, or display, depicting the dead civilization.

He became an expert on those curious relics of a dead civilization.

"We don't seem to be a dead civilization yet."

He was alone with the dead men of a dead civilisation.

Richter ratings can and have been made from studies of dead civilizations.

The members of the Expedition were scientists come to examine a dead civilization.

That a civilization a million years dead can hear?

"But what does a lot of history about dead civilizations have to do with here and now?"

A class about dead civilizations didn't interest either of them.

A society was being developed in which moral and spiritual factors would finally be given their due, as the waste products of a dead civilization.