"I think Nerado will come in for a conference, and we'll be able to make terms of some kind. He must know what these Lewistons will do, and he knows that we'll get a chance to use them, some way or other, before he gets to us again," Costigan asserted confidently--but again he was wrong. The door opened, and through it there waddled, rolled, or crawled a metal-clad monstrosity--a thing with wheels, legs, and writhing tentacles of jointed bronze; a thing possessed of defensive screens sufficiently powerful to absorb the full blast of the Triplanetary projectors without effort. Three brazen tentacles reached out through the ravening beams of the Lewistons, smashed them to bits, and wrapped themselves in unbreakable shackles about the armored forms of the three human beings. Through the door the machine or creature carried its helpless load, and out into and along a main corridor. And soon the three Terrestrials, without armor, without arms, and almost without clothing, were standing in the control room, again facing the calm and unmoved Nerado. To the surprise of the impetuous Costigan, the Nevian commander was entirely without rancor. "The desire for freedom is perhaps common to all forms of animate life," he commented, through the transformer. "As I told you before, however, you are specimens to be studied by the College of Science, and you shall be so studied in spite of anything you may do. Resign yourselves to that." "Well, say that we don't try to make any more trouble; that we co-operate in the examination and give you whatever information we can," Costigan suggested. "Then you will probably be willing to give us a ship and let us go back to our own world?" "You will not be allowed to cause any more trouble," the amphibian declared, coldly. "Your co-operation will not be required. We will take from you whatever knowledge and information we wish. In all probability you will never be allowed to return to your own system, because as specimens you are too unique to lose. But enough of this idle chatter--take them back to their quarters!" And back to their inter-communicating rooms the prisoners were led under heavy guard. True to his word, Nerado made certain that they had no more opportunities to escape. All the way back to far-distant Nevia the space-ship sped, where at once, in manacles, the Terrestrials were taken to the College of Science, there to undergo the physical and psychical examinations which Nerado had promised them.