Jason grinned as he read the note, and sent it. “It was unkind of David to tell of that,” came back the reply, “but now I know that Burroughs is indeed there, as only he could have known of that incident. I have a long message for him. Are you ready?” “Yes,” replied Jason. “Then stand by.” And this is the message that Abner Perry sent from the bowels of the earth; from The Empire of Pellucidar. INTRODUCTION It must be some fifteen years since David Innes and I broke through the inner surface of the earth’s crust and emerged into savage Pellucidar, but when a stationary sun hangs eternally at high noon and there is no restless moon and there are no stars, time is measureless and so it may have been a hundred years ago or one. Who knows? Of course, since David returned to earth and brought back many of the blessings of civilization we have had the means to measure time, but the people did not like it. They found that it put restrictions and limitations upon them that they never had felt before and they came to hate it and ignore it until David, in the goodness of his heart, issued an edict abolishing time in Pellucidar. It seemed a backward step to me, but I am resigned now, and, perhaps, happier, for when all is said and done, time is a hard master, as you of the outer world, who are slaves of the sun, would be forced to admit were you to give the matter thought. Here, in Pellucidar, we eat when we are hungry, we sleep when we are tired, we set out upon journeys when we leave and we arrive at our destinations when we get there; nor are we old because the earth has circled the sun seventy times since our birth, for we do not know that this has occurred. Perhaps I have been here fifteen years, but what matter. When I came I knew nothing of radio—my researches and studies were along other lines—but when David came back from the outer world he brought many scientific works and from these I learned all that I know of radio, which has been enough to permit me to erect two successful stations; one here at Greenwich and one at the capital of The Empire of Pellucidar. But, try as I would, I never could get anything from the outer world, and after a while I gave up trying, convinced that the earth’s crust was impervious to radio. In fact we used our stations but seldom, for, after all, Pellucidar is only commencing to emerge from the stone age, and in the economy of the stone age there seems to be no crying need for radio. But sometimes I played with it and upon several occasions I thought that I heard voices and other sounds that were not of Pellucidar. They were too faint to be more than vague suggestions of intriguing possibilities, but yet they did suggest something most alluring, and so I set myself to making changes and adjustments until this wonderful thing that has happened but now was made possible.