Although a little bewildered by the complexity of cars, I apprehended the general principle of the machine. I made a diagram, and understood it much better. “You have merely improved on the idea of my moving faster than the train when I was going to the smoking-car?” I said.
“Precisely. So far we have kept within the bounds of the practicable. To satisfy the professor, you can theorize in something after this fashion: if we double the number of cars, thus decreasing by one half the distance which each has to go, we shall attain twice the speed. Each of the sixteen cars will have but one eighth of a mile to go. At the uniform rate we have adopted, the two miles can be done in seven and a half instead of fifteen seconds. With thirty-two cars, and a sixteenth of a mile, or twenty rods difference in their length, we arrive at the speed of a mile in less than two seconds; with sixty-four cars, each traveling but ten rods, a mile under the second. More than sixty miles a minute! If this isn’t rapid enough for the professor, tell him to go on increasing the number of his cars and diminishing the distance each one has to run. If sixty-four cars yield a speed of a mile inside the second, let him fancy a Tachypomp of six hundred and forty cars, and amuse himself calculating the rate of car number 640. Just whisper to him that when he has an infinite number of cars with an infinitesimal difference in their lengths, he will have obtained that infinite speed for which he seems to yearn. Then demand Abscissa.”
I wrung my friend’s hand in silent and grateful admiration. I could say nothing.
“You have listened to the man of theory,” he said proudly. “You shall now behold the practical engineer. We will go to the west of the Mississippi and find some suitably level locality. We will erect thereon a model Tachypomp. We will summon thereunto the professor, his daughter, and why not his fair sister Jocasta as well? We will take them on a journey which shall much astonish the venerable Surd. He shall place Abscissa’s digits in yours and bless you both with an algebraic formula. Jocasta shall contemplate with wonder the genius of Rivarol. But we have much to do. We must ship to St. Joseph the vast amount of material to be employed in the construction of the Tachypomp. We must engage a small army of workmen to effect that construction, for we are to annihilate time and space. Perhaps you had better see your bankers.”
I rushed impetuously to the door. There should be no delay.
“Stop! stop! Um Gottes Willen, stop!” shrieked Rivarol. “I launched my butcher this morning and I haven’t bolted the—”
But it was too late. I was upon the trap. It swung open with a crash, and I was plunged down, down, down! I felt as though I were falling through illimitable space. I remember wondering, as I rushed through the darkness, whether I should reach Kerguellen’s Land or stop at the center. It seemed an eternity. Then my course was suddenly and painfully arrested.
I opened my eyes. Around me were the walls of Professor Surd’s study. Under me was a hard, unyielding plane which I knew too well was Professor Surd’s study floor. Behind me was the black, slippery haircloth chair which had belched me forth much as the whale served Jonah. In front of me stood Professor Surd himself, looking down with a not unpleasant smile.
“Good evening, Mr. Furnace. Let me help you up. You look tired, sir. No wonder you fell asleep when I kept you so long waiting. Shall I get you a glass of wine? No? By the way, since receiving your letter I find that you are a son of my old friend Judge Furnace. I have made inquiries, and see no reason why you should not make Abscissa a good husband.”