He looked at a map. It was a great chart of the surface of Mars, made by the famous Italian Schiaparelli, and he looked at more of the reviews and found ever the same subject considered in the marked articles. All related to Mars. He was puzzled but delighted. "The dear girl has a hobby," he thought. "Well, she shall enjoy it to the utmost." Nelly entered the room. Her face lighted up with pleasure when she met her fiancé, but assumed a more thoughtful look as she saw what he was reading. She welcomed him, though, as kindly as any lover could demand, and he, of course, was joyously content. "Still an astronomer, I see," he said, "and apparently with a specialty. I see nothing but Mars, all Mars! Have you become infatuated with a single planet, to the neglect of all the others? I like it, though. We will study Mars together." Her face brightened. "I am so glad!" she said. "I have studied nothing else for months. It has been so almost from the day you left us. And it is not Mars alone I am studying; it is the great problem of communication with the people there. Oh, Julius, it is possible, and the idea is something wonderful! Just think what would follow! It would be the beginning of an understanding between reasoning creatures of the whole universe!" He said that it was something wonderful, indeed, maybe only a dream, but a very fascinating one. "Oh, it is no dream," she answered. "It is a glorious possibility. Why, just think of it, we know, positively know, that Mars is inhabited. Think of what has been discovered. It was perceived years ago that Mars was intersected by canals, evidently made by human--I suppose that's the word--human beings. They run from the extremes of ocean bays to the extremes of other ocean bays, and connect, too, the many lakes there. Nature does not make such lines. They are of equal width, those canals, throughout their whole length, and Schiaparelli has even watched them in construction. First there is a dark line, as if the earth had been disturbed, and then it becomes bright when the water is let in. Sometimes, too, double canals are made there close to each other, running side by side, as if one were used for travel and transportation in one direction and one in another. And there are many other things as wonderful. The world of Mars is like our own. There are continents and seas and islands there--it is not a dead, dry surface like the moon--and it has clouds and rains and snows and seasons, just as we have, and of the same intensity as ours. Oh, Julius, we _must_ communicate with them!" "But, my dear, that implies equal interest on their part. How do we know them to be intelligent enough?"