Fuller whistled in awe. "No wonder they can make a plane like that when they have such a metal to work with." The designing engineer had visions of a machine after his own heart--one in which half the weight was _not_ employed in holding it together! It was a little later that they got communication through to Earth, and the men went to the power room. The television screen was struggling to form a clear image despite the handicap of forty million miles of space. In a moment it had cleared, though, and they saw the face of Dr. Arcot. He showed plainly that he was worried about the startling news that had reached him already, sketchy though it was. After brief though warm greetings, his son rapidly outlined to him the full extent of their discoveries, and the force that Earth would have to meet. "Dad, these Kaxorians have planes capable of far more than a thousand miles an hour in the air. For some reason the apparatus they use to propel them in space is inoperative in air, but their propellers will drive them forward faster than any plane Earth ever saw. You must start at once on a fleet of these molecular motion planes--and a lot of the gas Wade developed--you know how to make it--the animation suspending gas. They don't have it--and I believe it will be useful. I'll try to develop some new weapons here. If either of us makes any progress along new lines--we'll report to the other. I must stop now--a Lanorian delegation is coming." After a few words of farewell, Arcot severed connections with the Earth and arose to await the arrival of the visitors. Since the return of the Terrestrians to the _Solarite_, a great crowd of Venerians had gathered around it, awaiting a glimpse of the men, for the news had spread that this ship had come from Earth. Now, the crowd had divided, and a group of men was approaching, clothed in great heavy coats that seemed warm enough to wear in Terrestrial arctic regions! "Why--Arcot--what's the idea of the winter regalia?" asked Fuller in surprise. "Think a moment--they are going to visit a place whose temperature is seventy degrees colder than their room temperature. In the bargain, Venus never has any seasonal change of temperature, and a heavy bank of clouds that eternally cover the planet keeps the temperature as constant as a thermocouple arrangement could. The slight change from day to night is only appreciable by the nightly rains--see--the crowd is beginning to break up now. It's night already, and there is a heavy dew settling. Soon it will be rain, and the great amount of moisture in the air will supply enough heat, in condensing, to prevent a temperature drop of more than two or three degrees. These men are not used to changes in temperature as we are and hence they must protect themselves far more fully." Three figures now entered the airlock of the _Solarite_, and muffled in heavy garments as they were, large under any conditions, they had to come through one at a time.