The young couple spent the evening making happy plans for their life together on the outer earth, for as soon as they should arrive in America, Dolf would have no further hold over them.

The next day, the Committee of Five announced that, for a change, they were going to give George Abbot an intelligence test. He had represented himself as being one of the scientists of the outer earth; accordingly, they could gauge the caliber of his fellow countrymen by determining his I. Q.

Milli was quite agitated when this program was announced, but the ordeal held no terrors for George Abbot. Had he not taken many such tests on earth and pa.s.sed them easily?

So he appeared before the Committee of Five with a rather c.o.c.ky air.

He had yet to see an intelligence test too tricky for him to eat alive.

"Start him with something easy," suggested Dolf. "Perhaps they don't have tests on the outer earth. You know, one gains a certain facility by practice."

"Milli didn't, in spite of all the practicing which you gave her,"

maliciously remarked Thig.

Dolf glowered at him.

"What is the cube root of 378?" suddenly asked one of the other members of the committee.

"Oh, a little over seven," hazarded Abbot.

"Come, come," boomed Thig: "give it to us exactly."

"Well, seven-point-two, I guess."

"Don't guess. Give it exact, to four decimal places."

"In my head?" asked Abbot incredulously.

"Certainly!" replied Thig. "Even a child could do that. We're giving you easy questions to start with."

"Start him on _square_ root," suggested Dolf kindly. "Remember he isn't used to these tests like our people are."

So they tried him with square root, in which he turned out to be equally dumb.

Abstract questions of physics and chemistry he did better on; but the actual quant.i.tative problems, which they expected him to solve in his head, stumped him completely.

Then they asked him about education on earth, and the qualifications for becoming a scientist, and who were the leaders in his field, and what degrees they held, and what one had to do to get those degrees, etc. Finally they dismissed him. Dolf then sent for Milli.

She was gone about an hour, and returned to Abbot wide-eyed and incredulous.

"Oh, George," said she, lowering her voice. "Dolf tells me that your intelligence is below that of a five-year-old child! Perhaps that is why you and I get along so well together: we are both morons."

He started to protest, but she silenced him with a gesture and hurried on. "I am not supposed to tell you this, but I want you to know that your examination to-day has resulted in a complete change in their plans for the expedition to the surface. They have consulted with the leaders of our masters, and they agree with them."

She was plainly agitated.

"What is it, dear?" asked Abbot, with ominous foreboding.

Milli continued: "Early during your test, when you demonstrated that you couldn't do the very simplest mathematical problems in your head, they began to doubt your boastings that you are a scientist. But you were so ingenuous in your answers about conditions on the surface, that finally their faith in your honesty returned. If you are a scientist among men, as they now believe, then the average run of your people must be mere animals. This explains what has puzzled them before; namely, how the people of the earth tolerate poverty and unemployment and crime, and disease and war."

"Well?"

"And so a mere handful of our people, by purely peaceful means, could easily make themselves the rulers of the earth. Probably this would be all for the best; but somehow, my feelings tell me that it is not. I know only too well what it is to be an inferior among intelligent beings; so will not your people be happier, left alone to their stupidity, just as I would be?"

George Abbot was crushed. This frank acceptance by Milli of the alleged fact that he was a mere moron, was most humiliating. And swiftly he realized what a real menace to the earth, was this contemplated invasion from the deeps.

All that was worst in the world above would taint these intellectual giants of the undersea. They would rise to supremacy, and then would become rapacious tyrants over those whom they would regard as being no more than animals.

He had witnessed jealousies among them down below. Might not these jealousies flame into huge wars when translated to the world above?

Giants striving for mastery, using the human cattle as cannon fodder!

He painted to the girl a word-picture of the horrible vision which he foresaw.

The invasion must be stopped at all costs! He and Milli must pit their puny wits against these supermen!

But what could they do? As they were pondering this problem, a girl entered their sitting room--the same who had brought Abbot's breakfast on his first day in the caves. Milli introduced George to the newcomer, whose name was Romehl.

Romehl appeared so woebegone that the young American ventured to inquire if she too had been having difficulty with one of her tests.

But that was not the trouble; hers was rather of the heart.

About the same age as Milli, Romehl had recently pa.s.sed her twentieth birthday test and hence was eligible to marry; so she and a young man named Hakin had requested the fish-masters to give them the requisite permission. But their overlords for some reason had peremptorily denied the request. Romehl and Hakin were desolate.

Young Abbot's sympathies were at once aroused.

"Can't something be done?" he started to ask.

But Milli silenced him with a warning glance. "Of course not!" she said. "Who are we to question the judgment of our all-knowing masters?"

Romehl had really come to Milli just to pour her troubles into a friendly ear, rather than because she hoped to get any helpful ideas.

So she had a good cry, and finally left, somewhat comforted.

George and Milli then took up again the problem of saving the outer earth from the threatened invasion. Milli suggested that they go peaceably with the expedition, and then warn the authorities of America at the first opportunity after their arrival; but Abbot pointed out that this would merely result in their both being shut up in some insane asylum, as no one would believe such a crazy story as theirs.

The time for lights to be put out arrived without their thinking of any better idea.

Next day Milli spent considerable time with Dolf, and on her return excitedly informed Abbot that he had evolved a most diabolical plot.

There were sufficient quant.i.ties of explosives in storage to blast a hole through the wall of the caves, letting in the sea and killing everyone in the city. Dolf planned to set this off with a time fuse, upon the departure of the expedition. Thus Thig and the people who were left behind--about two-thirds of the total population of the city--would be destroyed, and the fish would have no one to send after Dolf and his followers to dictate to them on the upper earth.

Relieved of the thraldom of the fish, Dolf could make himself Emperor of the World, and rule over the human cattle, with Milli at his side as Empress. An alluring program--from Dolf's point of view.

"I didn't expect such treason even from Dolf!" exclaimed the young American. "We must tell Thig!"