the silken ottomans, he groped about with his hands in the impenetrable darkness for the pedestal supporting the dragon. At last his fingers touched the ivory. He slid them downward, feeling for the great vase of poppies which always stood before the golden image.…
The vase was on the left and not on the right of the pedestal. His theory was correct; he had been groping in the mysterious precincts of that Block B which he had never entered, which he had never seen any one else enter, and from whence he had never known any one to emerge! It was the fall that had confused him; now, he took his bearings anew, bent down to feel for any tables that might lie in his path, and crept across the apartment toward the door which he sought.
Ah! this time there could be no mistake! He depressed the lever handle, and, as the door swung open before him, crept furtively into the corridor.
Repeating the process whereby he had determined the position of the end door, he fumbled once again for the keyhole. He found it with even less difficulty than he had experienced in the wrong corridor, inserted the key in the lock, and with intense satisfaction felt it slip into place.
He inhaled a long breath of the lifeless air, turned the key, and threw the door open. One step forward he took…
A whistle (God! he knew it!) a low, minor whis-
