Read it through once

It was thus, Archer reflected, that New York managed its transitions: conspiring to ignore them till they were well over, and then, in all good faith, imagining that they had taken place in a preceding age. There was always a traitor in the citadel; and after he (or generally she) had surrendered the keys, what was the use of pretending that it was impregnable? Once people had tasted of Mrs. Struthers's easy Sunday hospitality they were not likely to sit at home remembering that her champagne was transmuted Shoe-Polish.