"No, they won't hear us, because I haven't heterodyned the audio in on the wave yet. And as for intruding, that's exactly what we came over here for."

He imposed the audio system upon the inconceivably high frequency of their carrier wave and spoke in the Osnomian tongue.

"Greetings, Roban, Dunark, and Tarnan, from Seaton." All three jumped to their feet, amazed, staring about the empty room as Seaton went on, "I am not here in person. I am simply sending you my projection. Just a moment and I will put on a little visibility."

He brought more forces into play, and solid images of force appeared in the great hall; images of the three occupants of the controller.

Introductions and greetings over, Seaton spoke briefly and to the point.

"We've got everything we came after--much more than I had any idea we could get. You need have no more fear of the Fenachrone--we have found a science superior to theirs. But much remains to be done, and we have none too much time; therefore I have come to you with certain requests."

"The Overlord has but to command," replied Roban.

"Not command, since we are all working together for a common cause. In the name of that cause, Dunark, I ask you to come to me at once, accompanied by Tarnan and any others you may select. You will be piloted by a ray which we shall set upon your controls. Upon your way here you will visit the First City of Dasor, another planet, where you will pick up Sacner Carfon, who will be awaiting you there."

"As you direct, so it shall be," and Seaton flashed the projector to the neighboring planet of Urvania. There he found that the gigantic s.p.a.ce-cruiser he had ordered had been completed, and requested Urvan and his commander-in-chief to tow it to Norlamin, piloted by a ray. He then jumped to Dasor, there interviewing Carfon and being a.s.sured of the full co-operation of the porpoise-men.

"Well, that's that, folks," said Seaton as he shut off the power. "We can't do much more for a few days, until the gang gets here for the council of war. How'd it be, Rovol, for me to practice with this outfit while you are finishing up the odds and ends you want to clean up? You might suggest to Orlon, too, that it'd be a good deed for him to pilot those folks over here."

As Rovol wafted himself to the ground from their lofty station, Crane and Margaret appeared and were lifted up to the place formerly occupied by the physicist.

"How's tricks, Mart? I hear you're quite an astronomer?" said Seaton.

"Yes, thanks to Orlon and the First of Psychology. He seemed quite interested in increasing our Earthly knowledge. I certainly know much more than I had ever hoped to know of anything."

"Yeah, you can pilot us to the Fenachrone system now without any trouble. You also absorbed some ethnology and kindred sciences. What d'you think--with Dunark and Urvan, do we know enough to go ahead or should we take a chance on holding things up while we get acquainted with some of the other peoples of these planets of the green system?"

"Delay is dangerous, as our time is already short," Crane replied after a time. "We know enough, I believe; and furthermore, any additional a.s.sistance is problematical; in fact, it is more than doubtful. The Norlaminians have surveyed the system rather thoroughly, and no other planet seems to have inhabitants who have even approached the development attained here."

"Right--that's the way I dope it, exactly. We'll wait until the gang a.s.sembles, then go over the top. In the meantime, I called you over to take a ride in this projector--it's a darb. I'd like to shoot for the Fenachrone system first, but I don't quite dare to."

"Don't _dare_ to? You?" scoffed Margaret. "How come?"

"Cancel the 'dare'--change it to 'prefer not to.' Why? Because while they can't work through a zone of force, some of their real scientists--and they have lots of them, not like the bull-headed soldier we captured--may well be able to detect a fifth-order ray--even if they can't work with them intelligently--and if they detected our ray, it'd put them on guard."

"You are exactly right, d.i.c.k," agreed Crane. "And there speaks the Norlaminian physicist, and not my old and reckless playmate Richard Seaton."

"Oh, I don't know--I told you I was getting timid as a mouse. But let's not sit here twiddling our thumbs--let's go places and do things.

Whither away? I want a destination a good ways off, not something in our own back yard."

"Go back home, of course, stupe," put in Dorothy, "do you have to be told every little thing?"

"Sure--never thought of that," and Seaton, after a moment's rapid mental arithmetic, swung the great tube around, rapidly adjusted a few dials, and stepped down upon a pedal. There was a fleeting instant of unthinkable velocity; then they found themselves poised somewhere in s.p.a.ce.

"Well, wonder how far I missed it on my first shot?" Seaton's crisp voice broke the stunned silence. "Guess that's our sun, over to the left, ain't it, Mart?"

"Yes. You were about right for distance, and within a few tenths of a light-year laterally. That is fairly close, I should have said."

"Rotten, for these controls. Except for the effect of relative proper motions, which I can't calculate yet for lack of data. I should be able to hit a gnat right in the left eye at this range--and the difference in proper motions couldn't have thrown me off more than a few hundred feet.

Nope, I was too anxious--hurried too much on the settings of the slow verniers. I'll snap back and try it again."

He adjusted the verniers very carefully, and again threw on the power.

Again there was the sensation of the barest perceptible moment of unimaginable speed, and they were in the air some fifty feet above the ground of Crane Field, almost above the testing shed. Seaton rapidly adjusted the variable-speed motors until they were perfectly stationary, relative to the surface of the earth.

"You are improving," commended Crane.

"Yeah--that's more like it. Guess maybe I can learn in time to shoot this gun. Well, let's go down."

They dropped through the roof into the laboratory where Maxwell, now in charge of the place, was watching a reaction and occasionally taking notes.

"Hi, Max! Seaton speaking, on a television. Got your range?"

"Exactly, Chief, apparently. I can hear you perfectly, but can't see anything," Maxwell stared about the empty laboratory.

"You will in a minute. I knew I had you, but didn't want to scare you out of a year's growth," and Seaton thickened the image until they were plainly visible.

"Please call Mr. Vaneman on the phone and tell him you're in touch with us," directed Seaton as soon as greetings had been exchanged. "Better yet, after you've broken it to them gently, Dot can talk to them, then we'll go over and see 'em."

The connection established, Dorothy's image floated up to the telephone and apparently spoke.

"Mother? This is the weirdest thing you ever imagined. We're not really here at all you know--we're actually here in Norlamin--no, I mean d.i.c.k's just sending a kind of a talking picture of us to see you on earth here.... Oh, no, I don't know anything about it--it's like a talkie sent by radio, only worse, because I am saying this myself right now, without any rehearsal or anything ... we didn't want to burst in on you without warning, because you'd be sure to think you were seeing actual ghosts, and we're not dead the least bit ... we're having the most perfectly gorgeous time you ever imagined.... Oh, I'm so excited I can't explain anything, even if I knew anything about it to explain. We'll all four of us be over there in about a second and tell you all about it. 'Bye!"

Indeed, it was even less than a second--Mrs. Vaneman was still in the act of hanging up the receiver when the image materialized in the living room of Dorothy's girlhood home.

"h.e.l.lo, mother and dad," Seaton's voice was cheerful but matter-of-fact.

"I'll thicken this up so you can see us better in a minute. But don't think that we are flesh and blood. You'll see simply three-dimensional talking pictures of ourselves, transmitted by radio."

For a long time Mr. and Mrs. Vaneman chatted with the four visitors from so far away in s.p.a.ce, while Seaton gloried in the working of that marvelous projector.

"Well, our time's about up," Seaton finally ended the visit. "The quitting-whistle's going to blow in five minutes, and they don't like overtime work here where we are. We'll drop in and see you again maybe, sometime before we come back."

"Do you know yet when you are coming back?" asked Mrs. Vaneman.

"Not an idea in the world, mother, any more than we had when we started.

But we're getting along fine, having the time of our lives, and are learning a lot besides. So-long!" and Seaton clicked off the power.

As they descended from the projector and walked toward the waiting airboat, Seaton fell in beside Rovol.

"You know they've got our new cruiser built of dagal, and are bringing it over here. Dagal's good stuff, but it isn't as good as your purple metal, inoson, which is the theoretical ultimate in strength possible for any material possessing molecular structure. Why wouldn't it be a sound idea to flash it into inoson when it gets here?"

"That would be an excellent idea, and we shall do so. It also has occurred to me that Caslor of Mechanism, Astron of Energy, Satrazon of Chemistry, myself, and one of two others, should collaborate in installing a very complete fifth-order projector in the new _Skylark_, as well as any other equipment which may seem desirable. The security of the Universe may depend upon the abilities and qualities of you Terrestrials and your vessel, and therefore _nothing_ should be left undone which it is possible for us to do."

"You chirped something then, old scout--thanks. You might do that, while I attend to such preliminaries as wiping out the Fenachrone fleet."

In due time the reinforcements from the other planets arrived, and the mammoth s.p.a.ce-cruiser attracted attention even before it landed, so enormous was she in comparison with the tiny vessels having her in tow.

Resting upon the ground, it seemed absurd that such a structure could possibly move under her own power. For two miles that enormous ma.s.s of metal extended over the country-side, and while it was very narrow for its length, still its fifteen hundred feet of diameter dwarfed everything near by. But Rovol and his aged co-workers smiled happily as they saw it, erected their keyboards, and set to work with a will.