"Since the declaration of war the nature of the column has altered. The three beams, instead of meeting at or near the surface of the earth, now join high in the heavens and the column strikes downward instead of expending its force upward. An added energy is used which produces the terribly destructive force below. And now we are able to locate fragments of the ships destroyed above, whereas previously there were no traces." * * * * * "Sounds reasonable," commented George. "But why have they not landed and waged their war right here without warning, if that is what they now intend to do?" "A natural question, George. But I have a hunch that the space flier or fliers of the enemy are conserving fuel by remaining beyond gravity. You know, in space flying, the greatest expenditures of energy are in leaving or landing on a body and, once landed, they might not have sufficient fuel for a getaway. They know we are not exactly helpless, once they are in our midst, and are taking this means of reducing us to the point of complete subjection before risking their precious selves among us." The telephone startled us by its insistent ring. It was a call from the hangar for Hart. The news broadcast announcer was in the midst of a long dissertation regarding the discovery only this morning that there were certain apparent discrepancies in the movements of the tides and unwonted perturbations of the moon's orbit. There flashed on the screen a view of the great observatory at Mount Wilson, and Professor Laughlin of that institution stepped into the foreground of the scene to take up the discussion so mechanically repeated by the announcer. "Must leave for the hangar at once," declared Hart, returning from the telephone. "Simler and his staff are there and we are wanted immediately." "Oh, Jack!" Marie begged with her eyes. "Got to be done, Honey," I responded, "and, believe me, I am going to do what little I can to help. Suppose we surrendered!" * * * * * I shuddered anew at the very thought and took hurried leave of my family, Hart and George awaiting me in the hall. Had I known what was to transpire before the end of the war, I am certain I would have been in much less of a hurry. We rushed to the hangar, where Secretary Simler and his party awaited us in the office. Rather, I should say, they waited for Hart Jones. "Mr. Jones," said the Secretary of War, when the introductions were over, "it is up to you to get the _Pioneer_ in shape to go out after these terrible creatures before the forty-eight hours have expired. We have replied to their ultimatum and have told them we will have our answer ready within the appointed time, but it is already agreed between the nations of the World Alliance that our reply is to be negative. Better far that we submit to the utter destruction of our civilization than agree to their terms."