perintendent of the museum and get him down here. Lively!"
The officers scattered throughout the big building, turned on all the lights, and began their search. They found the unconscious guards on the upper floor and carried them below for the police surgeon to work on. The surgeon sent in a call for his assistants.
Policemen who searched the statuary hall discovered the open trapdoor. They got up into the attic, and investigated there, and found nothing except dust and footprints in it. Down to the first floor they went to report this.
Verbeck and Muggs hurried to the attic and investigated for themselves.
"Very simple," Verbeck said. "Some member or members of the gang got up here during the day, remained in hiding until night, and then got down and handled the guards and officers."
"Yeah, but where are they now?" Muggs wanted to know.
"Not in the building, you may be sure. They managed to get out in some manner."
"And what did they swipe?"
"The superintendent will have to tell that, I suppose. There are several thousand things in this place, Muggs, that are almost priceless. The Black Star has done it again. Let's go downstairs and see if there is anything in the nature of a clew."
They hurried down the stairs. The superintendent of the museum had just arrived—a worried, frantic superintendent who immediately telephoned for more guards and one of his assistants.
