The old man worked hard, and long hours were passed in arduous experiments. The ozone machine had performed its mission, and was a thing of the past. The hair on Colchis' brows was whiter, the lines of care on his face deeper, and his gait slower. Fortune had smiled upon him. Money had rolled in, and the interior of the dilapidated old building was in strange contrast with the exterior. The rooms were handsomely furnished: bric-a-brac, books, a piano, and a thousand and one little _joujous_ dear to the feminine heart, gave evidence of the hand that had wrought this change--Marie Colchis. The seventeen-year-old girl to whom Junius Cobb had bidden a tearful adieu, had become a highly educated woman of twenty-one. The beauty of her youth grew with her years. Her disposition was commensurate with her beauty. The solace of her father in his age, the pride of his heart, she became the one object for which he lived and labored. Often and often had this sweet girl asked of her father some knowledge of Junius Cobb. When would he come? Was it known where he was? and did her father think that he still remembered his old friends in Duke's Lane? Then, as her thoughts wandered to their last interview, with its sad parting, tears filled her eyes, and her bosom heaved and fell with deep, sorrowing emotion. She still loved him; time had wrought no change. Her father saw it, knew it; and while a shade of sadness passed over his brow, he simply muttered: "It must be done!" Thus time passed. A great invention was Colchis at work upon. It would astonish the world; it would make him famous for life; his wealth would become vast in the extreme. But none of these thoughts disturbed the calm equanimity of this great man. He cared not for fame and honor, for his life was about run out. But wealth! Ah! that was another thing! He did want it; but for whom? Not himself? Who knows? "They will want it, will want all I can give them," he said to himself many times. Later on, there came many visitors to the house in Duke's Lane. They came singly, and sometimes in pairs. They remained awhile closeted with the old man, and then they went away. They were scientists sent by the government to report upon the invention of Jean Colchis. One day, after a more lengthy visit than usual from one of these gentlemen, Colchis entered the little parlor where Marie sat reclining in a large chair, reading a book of poems. Upon his approach, she quickly arose, and greeted him with warm affection.