"I can't imagine what material she can be made of!" said the officer.

"It's aluminum," replied Jack, "Have you a revolver?"

"Yes–a 32 calibre weapon."

"If you will put a bullet through her I'll give you $10,000."

Timberlake's surprise increased, and he drew his weapon.

Aiming it at the vehicle in various places he blazed away.

Six shots were thus fired.

He then closely examined the Terror, as the stage was named, and although he saw where each of the heavy caliber bullets had struck the machine, he failed to find a perforation.

In fact he picked up the bullets from the ground fused and battered out of shape.

Jack watched him with an amused smile.