I dived under the seat again, and came up with some more dust.

"Some one," I said to the programme girl, "has taken my hat."

"Have you looked under the seat for it?" she asked.

It was such a sound suggestion that I went under the seat for the third time.

"It may have been kicked further along," suggested another attendant. She walked up and down the row looking for it; and, in case somebody had kicked it into the row above, walked up and down that one too; and, in case somebody had kicked it on to the other side of the house, many other girls spread themselves in pursuit; and soon we had the whole pack hunting for it.

Then the fireman came up, suspecting the worst. I told him it was even worse than that—my hat had been stolen.

He had a flash of inspiration.

"Are you sure you brought it with you?" he asked.

The programme girls seemed to think that it would solve the whole mystery if I hadn't brought it with me.

"Are you sure you are the fireman?" I said coldly.