"And I also. But as we have both said, time may clear away some of its incongruities. Meanwhile I have an experiment to propose." And leaning close to the Inspector, notwithstanding the fact that there was nobody within hearing and he knew it, he whispered a few words in his ear.

The Inspector stared.

"To-night?" he asked.

The detective nodded.


IX

WHILE THE CITY SLEPT

Night—the night of a great city with its myriad of garish lights and its many curious and incongruous activities.

Who has not felt his imagination stirred by the contrasts thus offered—contrasts never more apparent than at these hours of supposed rest? Grim walls, with dimpled children sleeping behind them! Places of merrymaking athrob with music and dazzling with jets of incandescent light, with grief in the heart of the dancer and despair making raucous the enforced laugh!

But nowhere in the great city of which we write on this night of May 23, 1913, was there to be found a scene of greater contradictions than in the court and galleries of its famous museum.