What was this instrument--ticking away here in the great Sahara--but a travesty upon the possible!
Would I have believed in it had I not seen it with my own eyes?
And the initials--D. I.--upon the slip of paper!
David's initials were these--David Innes.
I smiled at my imaginings. I ridiculed the assumption that there was an inner world and that these wires led downward through the earth's crust to the surface of Pellucidar. And yet--Well, I sat there all night, listening to that tantalizing clicking, now and then moving the sending-key just to let the other end know that the instrument had been discovered. In the morning, after carefully returning the box to its hole and covering it over with sand, I called my servants about me, snatched a hurried breakfast, mounted my horse, and started upon a forced march for Algiers.
I arrived here today. In writing you this letter I feel that I am making a fool of myself.
There is no David Innes.
There is no Dian the Beautiful.
There is no world within a world.
Pellucidar is but a realm of your imagination--nothing more.
BUT--
The incident of the finding of that buried telegraph instrument upon the lonely Sahara is little short of uncanny, in view of your story of the adventures of David Innes.
I have called it one of the most remarkable coincidences in modern fiction. I called it literature before, but--again pardon my candor--your story is not.
And now--why am I writing you?
Heaven knows, unless it is that the persistent clicking of that unfathomable enigma out there in the vast silences of the Sahara has so wrought upon my nerves that reason refuses longer to function sanely.
I cannot hear it now, yet I know that far away to the south, all alone beneath the sands, it is still pounding out its vain, frantic appeal.
It is maddening It is your fault--I want you to release me from it.
Cable me at once, at my expense, that there was no basis of fact for your story, At the Earth's Core.
Very respectfully yours, COGDON NESTOR, --and--Club, Algiers.
June 1st,--.
Ten minutes after reading this letter I had cabled Mr. Nestor as follows:
Story true. Await me Algiers.
As fast as train and boat would carry me, I sped toward my destination. For all those dragging days my mind was a whirl of mad conjecture, of frantic hope, of numbing fear.
The finding of the telegraph-instrument practically assured me that David Innes had driven Perry's iron mole back through the earth's crust to the buried world of Pellucidar; but what adventures had befallen him since his return?
Had he found Dian the Beautiful, his half-savage mate, safe among his friends, or had Hooja the Sly One succeeded in his nefarious schemes to abduct her?
Did Abner Perry, the lovable old inventor and paleontologist, still live?
Had the federated tribes of Pellucidar succeeded in overthrowing the mighty Mahars, the dominant race of reptilian monsters, and their fierce, gorilla-like soldiery, the savage Sagoths?
I must admit that I was in a state bordering upon nervous prostration when I entered the -and-Club, in Algiers, and inquired for Mr. Nestor. A moment later I was ushered into his presence, to find myself clasping hands with the sort of chap that the world holds only too few of.
He was a tall, smooth-faced man of about thirty, clean-cut, straight, and strong, and weather-tanned to the hue of a desert Arab. I liked him immensely from the first, and I hope that after our three months together in the desert country--three months not entirely lacking in adventure--he found that a man may be a writer of "impossible trash" and yet have some redeeming qualities.
The day following my arrival at Algiers we left for the south, Nestor having made all arrangements in advance, guessing, as he naturally did, that I could be coming to Africa for but a single purpose--to hasten at once to the buried telegraph-instrument and wrest its secret from it.
In addition to our native servants, we took along an English telegraph-operator named Frank Downes.
Nothing of interest enlivened our journey by rail and caravan till we came to the cluster of date-palms about the ancient well upon the rim of the Sahara.
It was the very spot at which I first had seen David Innes. If he had ever raised a cairn above the telegraph instrument no sign of it remained now. Had it not been for the chance that caused Cogdon Nestor to throw down his sleeping rug directly over the hidden instrument, it might still be clicking there unheard--and this story still unwritten.
When we reached the spot and unearthed the little box the instrument was quiet, nor did repeated attempts upon the part of our telegrapher succeed in winning a response from the other end of the line. After several days of futile endeavor to raise Pellucidar, we had begun to despair. I was as positive that the other end of that little cable protruded through the surface of the inner world as I am that I sit here today in my study--when about midnight of the fourth day I was awakened by the sound of the instrument.
Leaping to my feet I grasped Downes roughly by the neck and dragged him out of his blankets. He didn't need to be told what caused my excitement, for the instant he was awake he, too, heard the long-hoped for click, and with a whoop of delight pounced upon the instrument.
Nestor was on his feet almost as soon as I. The three of us huddled about that little box as if our lives depended upon the message it had for us.
Downes interrupted the clicking with his sending-key. The noise of the receiver stopped instantly.
"Ask who it is, Downes," I directed.
He did so, and while we awaited the Englishman's translation of the reply, I doubt if either Nestor or I breathed.
"He says he's David Innes," said Downes. "He wants to know who we are."
"Tell him," said I; "and that we want to know how he is--and all that has befallen him since I last saw him."
For two months I talked with David Innes almost every day, and as Downes translated, either Nestor or I took notes. From these, arranged in chronological order, I have set down the following account of the further adventures of David Innes at the earth's core, practically in his own words.
