The warden hurried away to carry out the doctor's orders, and an orderly appeared in a few moments with a hollow globe made of some crystalline transparent substance. Despite its presence in the infirmary the evening before, there was no trace of clouding apparent. Dr. Bird took it and examined it critically. He rapped it with his knuckles and then stepped to the door and hurled it violently down on the concrete floor of the yard. The globe rebounded without injury and he caught it. "Vitrilene, or a good imitation of it," he remarked to Carnes. "After you get through talking to the hospital, get Taylor on the wire. There is plenty of loose vitrilene in the Bureau, and I want him to send down about fifty square feet of it by a special plane at once." As Carnes left the room, the warden reappeared. "The men are all lying in the sun now, Doctor," he said. "I find that we have the two men you mentioned confined here. They are both in Tier A, Building 6." "Is that an isolated building?" "No, it is one wing of the old main building." "On which floor?" "The second floor. It is a six-story building." "Have they been moved there recently?" "They have been there for nearly a year." * * * * * "In that case there will be little chance of another attack of this sort to-night. At the same time, I would advise you to station extra guards there to-night and every night until I notify you otherwise. Caution them to watch the lights carefully and to give an alarm at once if they appear to get dim. In such a case, send men to the roof with rifles with orders to shoot to kill anyone they find there. I am going back to Washington and I am going to take Karuska, your No. 9764 with me. You had better have one of the guards in the corridor, where Denberg and Semensky are, wear this goldfish bowl, as you call it. A lot of plate glass--at least it will look like that--will come from Washington by plane. Cut it into sheets a foot square and use surgeon's plaster to make some temporary glass helmets for your men. I want all your guards to wear them until I either settle this matter or else send you some better helmets. Do you understand?" "I understand all right, but I'm afraid that I can't do it. The wearing of such appliances would interfere with the efficiency of my men as guards." "Brain and tongue paralysis would interfere rather more seriously, it seems to me. In any event, I have sufficient authority to enforce my request. If you are at all doubtful, call up the Attorney General and ask him." The warden hesitated. "If you don't mind, I think I will call Washington, Doctor," he said. "I will have to get authority to turn No. 9764 over to you in any event."