Uncle Henry drew a sigh of relief; he didn't know quite what a dolphin looked like, and he had seen a picture of a sea-horse in the dictionary only the day before. So _Delphinus_ turned out to look like this. If you insist on having him a dolphin, why draw him differently yourself: [Illustration] "I wonder," said Betty thoughtfully, "who rides the sea-horses. Do the mermaids, Uncle Henry?" "I don't know about the mermaids," he answered, "but I do know that an ancient poet and musician, named _Arion_, was saved from drowning by riding to shore on a dolphin. It was like this: "Arion had gone from his home on the island of Lesbos to Italy, and while there had made a great deal of money by his singing." "Just like Caruso in New York," exclaimed Paul. "Yes," said Uncle Henry, "and also like Caruso, _Arion_ decided to go home for a visit. Well, on the way to Lesbos the sailors decided to murder _Arion_ and get all the money he was taking home with him. He had gone on a regular pirate ship you see. The pirates were all ready to kill _Arion_, but he begged so hard to play just one little melody on his lute before he died that the pirate sailors said, 'Yes, he might play just one.' You would hardly believe it, but the melody that _Arion_ played was so catchy and tuneful that it attracted a number of dolphins, who began to dance and turn somersaults about the ship. Then _Arion_ watched his chance--and jumped over-board--and one of the friendly, music-loving dolphins carried him back to Lesbos on his back." "My, but I'm glad he got away from those awful pirates!" cried Betty with heartfelt fervor. "It's too bad the horrid sailors got his money after all," said Peter. "If they hadn't he might have got something nice for the dolphin to eat when he got to that place where he lived." "The dolphin fared better than that," Uncle Henry assured the children. "It pleased the sea god _Neptune_ so much to have one of his creatures save a poet's life that he had that dolphin put in the sky among the stars, and we see him there now as the constellation _Delphinus_." "What's next?" demanded Peter when the story of _Delphinus_ was finished. "The next three," said Uncle Henry, shaking his head sadly, "are the last." "The last?!!" chorused the Society of Star-Gazers incredulously. "Well, maybe not absolutely the last," admitted Uncle Henry, "but the last for this Summer. There is a whole dozen more of the Star People in our northern sky, but we can't see them until next Winter." "Why?" inquired Betty anxiously. "It's a long story," said Uncle Henry. "Sometime I'll tell you all of it, beginning with the fact that the pole of the earth always points to the north star, where the little bear's tail is fastened, you remember. I promise to show you all the rest of the star animals and people when I come home for my Christmas vacation. Will that do, if I show you a wonderful eagle to-night--and a sea goat and a water carrier to finish up with?"