"You might as well close your switch and save your breath, Saranoff, for we will do nothing of the sort," replied the doctor sharply.
"Ah, but you will. So will Mr. Carnes. I had no hopes that you would join me willingly. In fact, I am pleased that you do not. I could never trust you. All the same, you will join my forces as have the others whom I have brought into the hands of the Selom. I have ways of accomplishing my desires. It pleases my fancy, Doctor, to use your brains in aiding me in my scientific developments. You will enjoy working with the scientists of the Selom. Among them you will find brains which excel any to be found on the surface of the earth, since we two are below. Already I have learned much from them. You, Mr.
Carnes shall be taught to pilot an airplane. When my cohorts go forth from the realms of the Selom to establish the rule of Russia, you will be piloting one of the planes. Your first task will be to learn to fly."
"I refuse to do anything of the sort!" said Carnes.
"I will not be ready to have your flying lessons started until to-morrow," replied the Russian, "and you will have until then to reconsider your rash decision. It will be much easier for you if you obey my orders. If you still refuse to-morrow, you will pay a visit to the laboratory of the Selom. When you return your lessons will be started. You will now be taken to your cell. I have use for Dr. Bird this afternoon."
"I won"t leave Dr. Bird and that"s flat!" exclaimed Carnes. Dr. Bird interrupted him.
"Go ahead, Carnesy, old dear," he said lightly. "You might just as well toddle along under your own power as to be dragged along. You have a day for reflection, in any event. I daresay I"ll see you again before they do anything to you."
Carnes glanced keenly at the doctor"s face. What he saw evidently rea.s.sured him for he turned without a word and walked away. The light grew gradually dimmer until darkness again reigned in the cavern.
"Come, Doctor," said Saranoff"s voice. "We have work to do."
Carnes sat alone in his cell for hours. The darkness and loneliness wore on him until he felt that his nerves would crack. Not a sound came to him. He threw himself on one of the beds and plugged his ears with his finger tips in an attempt to keep the silence out. Then a cheerful voice sounded in the cell and a friendly hand fell on his shoulder.
"Well, Carnesy, old dear," said Dr. Bird, "have you been lonesome?"
"Dr. Bird!" gasped Carnes in tones of relief. "Are you all right?"
"Right as can be. I learned a lot this afternoon. For one thing, you"re going to start flying lessons to-morrow and you"re going to do your best to become an expert pilot in a short time. It is the only thing to do."
"And fly a plane for Saranoff?"
"I hope not. The only way to avoid that very thing is to keep your mentality unimpaired so that I can call on you for help when I need it. If the Selom operate on you, you will be useless to me."
"Operate? What do you mean?"
"I"ll tell you. The Selom are a very old and highly civilized people.
For ages they have possessed scientific knowledge for which the upper-world scientists are now blindly groping. Among other things, they have a perfect knowledge of the workings of the brain. If they operate they will remove from your brain every speck of memory you have of past events, leaving only those things that will be useful to Saranoff. You will be his complete slave. In that condition you will be taught to fly a plane. When the time comes, you will fly one with no remembrance of anything which happened prior to the operation and with no will but his. It will be easier to teach you flying in your natural state if you are willing. You will be willing."
"If you wish it, Doctor."
"I do wish it, most decidedly," Dr. Bird went on. "Obey every order they give you. You will find that the Selom are an enlightened and civilized race. They are very kindly and would willingly harm no one."
"Then why have they taken up with Saranoff?"
"He is the first man with whom they have come into contact. He has told them a horrible tale of conditions on the surface, and they have swallowed it, hook, line and sinker. They believe that he is going to establish a new order of happiness and plenty for all with the aid of his gang of cutthroats from Russia. If they had the slightest inkling of the true state of affairs, they would turn on him in an instant."
"Why don"t you tell them?"
"Remember that I am a stranger here and he has poisoned their minds against me. Although the mind of an ordinary men is an open book to them, they cannot read Saranoff"s secret thoughts against his will.
They can"t read mine either, for that matter. I am working in the laboratory and I will pick up a great deal. When the time comes, we will strike for our liberty and for the safety of the world."
"Did you learn Saranoff"s plans?"
"Yes. He is gathering planes and pilots in the underground caverns of the Selom. When he gets enough, he will bring men from Russia to man the planes. What could the United States, or the world for that matter, do against a fleet of hundreds, possibly thousands, of the best planes equipped with deadly weapons unknown to their science?
That menace confronts us and we must remove it. To give you some idea of the power of the Selom, this afternoon Saranoff and I with one a.s.sistant opened a cavern in the solid rock three miles long and a mile wide and over six hundred feet in height."
"Three men! How on earth did you do it?"
"Two men and one mole. We did it with a ray, the secret of which only the Selom and Saranoff know."
"You have told me a disintegrating ray is an impossibility," objected Carnes.
"It is. This was not a disintegrating ray. Carnes, either I am crazy or the Selom have solved the secret of time, the fourth dimension. I haven"t been able to grasp the whole thing yet. What I think we did was to remove that rock a distance, perhaps only a millionth of a second, forward or back into time. At any rate it ceased to exist, yet they can bring it back unchanged at will. That was the way they captured our plane. They sent out a magnetic ray of such power that it stopped our plane in midair and brought it to the ground. They removed the rock from beneath us and lowered us into the hole. By reversing the process they restored things to their original condition. All of these tunnels and rooms were made in that way."
"I still don"t understand how they did it."
"I don"t either, but I hope to in time. Now let"s go to bed. It"s late. To-morrow you will start your lessons with Captain Garland as an instructor. He won"t know you for he was operated on this afternoon.
Do your best to become a pilot. When I get ready, I want you with me in full possession of all your faculties."
The next morning the two prisoners separated and went to their duties.
In the cavern which Dr. Bird had described, Captain Garland was waiting beside the plane he had flown. He did not know Carnes, but he still knew how to fly. Declining to enter into any conversation, he started expounding the theory of flying to the detective. Carnes remembered Dr. Bird"s words and applied himself wholeheartedly. For four hours they worked together. At the end of that time the light faded in the cavern and Carnes was led by an unseen guide back to his cell. He threw himself on a bed and awaited Dr. Bird"s return.
"I have learned a few more things about the Selom," said the doctor when he entered the cell several hours later. "We are in their largest community. They have cities or warrens scattered all over the world.
Each city has its own ruler, but the whole race are ruled by an overlord or king who habitually lives here. He is away visiting a community under northern Africa just now, but he will be back in a few days. The Selom are sincere in their desire to help the upper world.
They feel great pity for mankind in view of the conditions Saranoff has described to them. When the king returns. I plan to make a direct appeal to him. In the meantime, go on with your flying lessons. How did you make out to-day?"
The second day was a repet.i.tion of the first, as were the third and fourth. A week pa.s.sed before Dr. Bird entered the cell in evident excitement.
"Has Hanac brought our evening food yet?" he asked anxiously.
"No, Doctor."
"Good. Take this light. As soon as he enters throw the light full on him and hold him until I work on him. We"ve got to make our escape."
"Why?"
"The king is due back to-morrow. Saranoff is frightened at the good impression I have made on the Selom. He is supreme in the monarch"s absence, so he plans to operate on both of us before he returns. He is afraid to allow me to see the king with an unimpaired intellect and memory. Shh! Here comes Hanac." The door to their cell opened noiselessly. When the mole who brought their food was well inside, Carnes turned on the tiny flashlight. The mole dropped on all fours and tried to turn its back. Dr. Bird sprang forward. For an instant his slim muscular fingers worked on the mole"s neck and shoulders.
Silently the animal sank in a heap.
"Come on, Carnes," cried the doctor. "Turn off the light."
"Did you kill him, Doctor?" asked Carnes as he raced down a pitch dark corridor at the scientist"s heels.
"No, I merely paralyzed him temporarily. He"ll be all right in a day or so. Turn here."