"_Cerberus_," said Uncle Henry, "But in order to find him we'll have to find _Hercules_, the great strong man, for _Hercules_ has _Cerberus_ fast by one of his throats and is beating at his three ugly heads with a big club. At the same time, _Hercules_ has his left foot on the dragon's head, so you see he is kept busy." "Where do we begin?" asked Paul, impatiently. "Draw a line," said Uncle Henry, "from _Vega_ in the ukelele to _Gemma_ in the _Northern Crown_; the Virgin's necklace we found a while ago, you know." Paul did it. (14) "Now," directed Uncle Henry, "look about half-way between, and you'll find _Hercules'_ legs. His left leg is nearly straight, but his right has the knee bent a little. _Hercules'_ legs and the sides of his body and his belt make sort of an H shape." "Oh, I see it!" exclaimed Peter. "Shall I make him, Uncle Hen?" "Sure, go ahead, Pete; and the rest of you watch for _Hercules'_ head and arms." When the children had put down pebbles to represent all the stars in _Hercules_, and had connected them with lines in the sand, _Hercules_ looked like this: [Illustration] "Oh," broke out Betty, excitedly, "he's got the ugly dog in his left hand!" Then she added the three heads of _Cerberus_, and it was Uncle Henry's turn to draw in the outline of _Hercules_, and complete the picture, like this: [Illustration] "You have probably read," said Uncle Henry, "about the twelve great labors _Hercules_ performed. He had to be very strong to do them, but of course he was born that way. They say he even rose up out of his cradle and strangled two serpents that the goddess _Juno_ sent to destroy him." The Society of Star-Gazers became very enthusiastic about _Hercules_ after he was all finished. So will you when you see how big and strong and beautiful he is, almost straight over your head in the summer sky just after dark. You will enjoy him more if you lie on your back to look, as the Society of Star-Gazers did on the beach. While they were all flat on the sand, looking up into the great blue-black, star-sprinkled bowl, Uncle Henry made up this poem, and recited it before the Society adjourned for the night: "Hercules the strong man-- Feel his muscle! Feel his muscle! Hercules the strong man-- See him tussle! See him tussle! Right hand holds a club-- I can see; I can see. Left hand grips a throat-- One of three; One of three. Three-head dogs are freaks-- Queer to us; Queer to us. That's because you never saw-- Cerberus; Cerberus. FIFTH EVENING IN WHICH A DOLPHIN WITH AN EAR FOR MUSIC SAVES A POET'S LIFE--AND UNCLE HENRY PUTS TWO BIRDS IN ONE POEM During the next day Peter and Paul had seen a blue-racer in the grass, and, with Rags' assistance, had chased it off into the woods behind the cottage. So it was only natural for Peter to ask Uncle Henry whether there were any snakes among the star creatures.