In September the air is crisp along the route from Black Bay to Duluth, and from that through fair Wisconsin to Chicago, and Corbett's spirits were high throughout the journey. Was he not to meet Nell Morrison, in his estimation the sweetest girl on earth? Was he not soon to possess her entirely and for a permanency? He made mental pictures of the meeting, and drifted into a lover's mood of planning. Out of his wealth what a home he would provide for her, and how he would gratify her gentle whims! Even her astronomical fancy, Vassar-born, should become his own, and there should be an observatory to the house. He had a weakness for astronomy himself, and was glad his wife-to-be had the same taste intensified. They would study the heavens together from a heaven of their own. What was wealth good for anyhow, save to make happy those we love? The train sped on, and Chicago was reached, and very soon thereafter was reached the home of the Morrisons. Corbett could not complain of his reception. The one creature was there, sweet as a woman may be, eager to meet him, and with tenderness and steadfastness shown in every line of her pretty face. They spent a charming day and evening together, and he was content. Once or twice, just for a moment, the young woman seemed abstracted, but it was only for a moment, and the lover thought little of the circumstance. He was happy when he bade her good-night. "To-morrow, dear," said he, "we will talk of something of greatest importance to me, of importance to us both." She blushed and made no answer for a second. Then she said that she loved him dearly, and that what affected one must affect the other, and that she would look for him very early in the afternoon. He went to his hotel buoyant. The world was good to him. When Corbett called at the Morrison mansion the next day he entered without ringing, as was his habit, and went straight to the library, expecting to find Nell there. He was disappointed, but there were traces of her recent presence. There was an astronomical map open upon the table, and books and reviews lay all about, each, open, with a marker indicating a special page. A little glove lay upon the floor, and Corbett picked it up and kissed it. He summoned a servant and sent upstairs to announce his presence; then turned instinctively to note what branch of her favorite study was now attracting his sweetheart's attention. He picked up one of the open reviews, an old one by the way, and read a marked passage there. It was as follows: "It will always be more difficult for us to communicate with the people of Mars than to receive signals from them, because of our position and phases. It is the nocturnal terrestrial hemisphere that is turned toward the planet Mars in the periods when we approach most nearly to it, and it shows us in full its lighted hemisphere. But communication is possible."