The waving of his free hands and arms, that a crowd estimated at 20,000 has seen bound by two attendants from the Mayview (old Marshalsea) Hospital for the Insane, told the watchers that Houdini had achieved one of the most unique feats in his strange career. As he was lowered swiftly to the ground, a great cheer arose, followed by another and another as he stood upright and bowed to the throng which not only packed the streets but filled every window and roof top within view of the scene. WIZARD IS ON TIME Urbane, smiling, the elusive Houdini appeared in the office of "The Sun" at 12 o'clock. R. D. Polling and H. Guthrie, the two attendants from Mayview detailed to truss him up, awaited him, and with them the straight-jacket, in a satchel. Houdini shook hands with both men, speaking humorously of his position as substitute for the deranged persons the two Attendants ordinarily handle. The two men, clad in the white uniforms used by them when on duty, surveyed their voluntary victim noted his short, stocky form, his powerful arms and shoulders, his steady, bright eyes. Both have had long experience in binding frenzied men. Both were determined, they told Houdini, to use the full resource of that experience in binding him. They knew the prowess of the man they had to deal with. They did not comment upon the outcome of the test. They were there, they said, to do their work as best they knew how. Houdini urged speed of action, and absolute surety in fastening the innumerable straps of the straight-jacket. "Treat me," he advised, smiling, "as you would the most dangerous of the criminal insane." EVERY MOVE IS WATCHED The strait-jacket was taken out of the satchel. The handcuff king examined it carefully, while a group of persons looked on. Not a move he made was lost. He dropped the piece of canvas and leather carelessly, smiled again, and said: "Very good. Are we ready?" It was almost 12.30 o'clock. Houdini glanced out the window, and again his characteristic, quiet smile came to his face as he saw Wood street and Liberty avenue congested from wall to wall with closely packed, restless humanity. Then a white-clad attendant on each side, he went downstairs to the street to be bound. A suppressed shout came from the crowd as he appeared in the doorway of The Sun building. It increased in volume as with the attendants and two members of "The Sun" at 12 o'clock. R. D. Polling wagon that had been pulled up on the pavement, and that was serving as a stage. Above him, like a gallows, a single beam projected from a window at the top story of the building, and a rope swung clear, coiling in sinister fashion at his feet. Houdini had removed the outer clothing from the upper part of his body. "Ready," he said. STRAPS ARE FASTENED