"I happen to know," I concluded, "that the lady of the limousine is here to-night. Before the ball is over I shall have danced with her."

"But you've never seen her," she protested.

"I know her voice."

She laughed musically.

"Aren't you a bit of an optimist?" she queried.

"I don't think so. And she's just sweet."

"But if you don't know her name, how can you hope——"

"Her name," I said, "is Dot."

The hand upon my shoulder shook slightly.

We danced on.