"You don't say so," gasped Lady Ruth, her round eyes rounder than ever.
"I found some directions in the handwriting of the murdered man," went on Gimblet, "which I could not understand at first. But their meaning is plain enough now. 'Take the bull by the horn,' he says. Well, here are the bulls, and I shall soon know which is the horn."
He walked round to the front of the statue, so that he faced the stooping figure of Pandora, and laid his hand upon one of the curved and projecting horns of the left-hand bull. Nothing happened, and he tried the next There were seven heads in all along the face of the great block, and he tested six of them without perceiving anything unusual. Was it possible that he was mistaken, and that, after all, the words of the message did not refer to the statue?
When he grasped the first horn of the last head, the hand that did so was shaking with excitement and suspense. It seemed, like the rest, to possess no attribute other than mere decoration. And yet, and yet--surely he had missed some vital point. He would go over them again. There remained, however, the last horn, and as he took hold of it with a premonitory dread of disappointment, he felt that it was loose in its socket, and that he could by an effort turn it completely over. With a triumphant cry he twisted it round, and at the same moment Lady Ruth started back with an exclamation of alarm.
She was standing where he had left her, and was nearly knocked down by the great slab of stone which, as Gimblet turned the horn of the bull, swung sharply out from the end of the pediment, till it hung like a door invitingly open and disclosing a hollow chamber within the stone.
Within the opening, on the floor at the far end, stood a large tin despatch-box.
The door was a good eighteen inches wide; plenty of room for Gimblet to climb in, swollen with exultation though he might be. In less than three seconds he had scrambled through the aperture and was stooping over the box. It seemed to be locked, but a key lay on the top of the lid. He lost no time in inserting it, and in a moment threw open the case and saw that it was full of papers.
Suddenly there was another cry from Lady Ruth as, for no apparent cause and without the slightest warning, the stone door slammed itself back into position, and he was left a prisoner in the total darkness of the vault. He groped his way to the doorway and pushed against it with all his strength. He might as well have tried to move the side of a mountain. But, after an interval long enough for him to have time to become seriously uneasy, the door flew open again, and the agitated countenance of Lady Ruth welcomed him to the outside world.