“After the men and their families had settled in the great roomy mouth of the cavern my ancestor supplied himself with several strong men and food and lights, and sought to explore the entire cavern. “To their astonishment they found that it was practically endless. When they had gone down about sixty or seventy miles below the sea level they found themselves on a vast, undulating plain, the soil of which was dark and rich, with the black roof of the cavern arching overhead like the bottom of a great inverted bowl. And when they had travelled about ten days and reached the other side my ancestor calculated that the cave must be over one hundred miles in diameter and almost circular in shape. But what elated and surprised them most was the remarkable salubrity of the atmosphere. In all parts of the cave it was exactly the same temperature, and they found that they scarcely felt any fatigue from their journey, and that they had little desire to eat the provisions with which they were supplied. Indeed, the very air seemed permeated with a subtle quality that gave them strength and energy of mind and body. “Finally, when, after a month had passed, and they returned to their anxious friends, these people overwhelmed them with exclamations of surprise over their appearance. And in the light of day the explorers looked at one another in astonishment, for, in the dim light of the lanterns they had carried, they had not noticed the great change that had come over them. They had all become the finest specimens of physical health that could be imagined. Their bodies had filled out; they were remarkably strong; their skins shone with healthful color and their eyes sparkled with intellectual energy, and their minds, even to the humblest burden-carrier, were astonishingly acute and active. “My ancestor was a remarkable man, and he had hitherto shown much inventive ability; but in that month in the cave he had developed into an intellectual giant. After mature deliberation, he proposed a prodigious scheme to his followers. He explained that, while they might, by using the utmost discretion, hold the financial world in their power by means of their inexhaustible wealth, that the laws and restrictions of different countries prevented men of vast wealth from really enjoying more privileges than men of moderate means. He grew eloquent in speaking of the underground atmosphere, and proposed that they light the great cavern from end to end and make it an ideal place where they could live as it suited them. “I see that you guess the end. My ancestor was a great student of the sciences and had already thought of putting electricity to practical use. You are surprised? Yes, it has been applied to our purposes for two hundred years, while your people have understood its use such a short time.” “Great heavens!” exclaimed the Englishman. “I see it all; the sun is an electric one!” “Yes.”