"I don't know--yet," Cleveland replied, slowly. "But I'm afraid that there's more, and worse." He opened a space-suit reverently, revealing the face; a face calm and peaceful, but utterly, sickeningly white. Still reverently, he made a deep incision in the brawny neck, severing the jugular vein, then went on, soberly: "You never imagined such a thing as _white_ blood, either, but it all checks up. Someway, somehow, every atom of free or combined iron in this whole volume of space was made off with." "Huh? How come? And above all, _why_?" from the amazed and staring officers. "You know as much as I do," grimly, ponderingly. "If it were not for the fact that there are solid asteroids of iron out beyond Mars, I would say that somebody wanted iron badly enough to wipe out the fleet and the planetoid to get it. But anyway, whoever they were, they carried enough power so that our armament didn't bother them at all. They simply took the metal they wanted and went away with it--so fast that I couldn't trace them with an ultra-beam. There's only one thing plain; but that's so plain that it scares me stiff. This whole affair spells intelligence, with a capital 'I', and that intelligence is anything but friendly. I want to put Fred Rodebush at work on this just as fast as I can get him." He stepped over to his ultra-projector and put in a call for Virgil Samms, whose face soon appeared upon his screen. "We got it all, Virgil," he reported. "It's something extraordinary--bigger, wider, and deeper than any of us dreamed. It may be urgent, too, so I think I had better shoot the stuff in on an ultra-beam and save some time. Fred has a telemagneto recorder there that he can synchronize with this outfit easily enough. Right?" "Right. Good work, Lyman--thanks," came back terse approval and appreciation, and soon the steel wires were again flashing from reel to reel. This time, however, their varying magnetic charges were so modulating ultra-waves that every detail of that calamitous battle of the void was being screened and recorded in the innermost private laboratory of the Triplanetary Service. Eager though he naturally was to join his fellow-scientists, Cleveland was not impatient during the long, but uneventful journey back to Earth. There was much to study, many improvements to be made in his comparatively crude first ultra-camera. Then, too, there were long conferences with Samms, and particularly with Rodebush, the nuclear physicist, who would have to do much of the work involved in solving the riddles of the energies and weapons of the Nevians. Thus it did not seem long before green Terra grew large beneath the flying sphere of the _Chicago_. "Going to have to circle it once, aren't you?" Cleveland asked the chief pilot. He had been watching that officer closely for minutes, admiring the delicacy and precision with which the great vessel was being maneuvered preliminary to entering the Earth's atmosphere.