Pluto was a dark and gloomy god. No temples were ever built to him, and only black animals were sacrificed upon his altars. But he was just, although pitiless and stern. He sits upon a throne of sulphur in his underground palace, from which flow the four rivers of Hades--Cocytus, the river of Lamentation; Acheron, the river of Sorrow; Lethe, the river of Forgetfulness; and Phlegethon, the river of Fire. On his left hand sits Proserpine, near to whom stand the Furies, three fiends with snakes instead of hair; on his right stand the Fates spinning; at his feet lies the three-headed dog, Cerberus; and the Harpies hover over him, waiting for orders. On the whole, it is not strange that Proserpine should be glad when the time for her six months' visit to her mother comes round. PART II.--THE KINGDOM. "Hades," the name of the kingdom of Pluto and Proserpine, means "invisible," because it is unseen by living eyes. It is surrounded by the river Styx by which the gods swore their sacred oath, and which flows round and round it in nine circles before springing up into the living world. Even when the Styx rises out of the ground in the land of Arcadia, it still remains a cold black river, whose waters are poisonous to drink; but if anybody was bold enough to bathe in them, and lucky enough to come out alive, no weapon afterwards would have power to wound him. Some people say that Thetis (the goddess who saved Jupiter from the great plot) dipped her child Achilles into the Styx as soon as he was born, head foremost, holding him by the left heel between her finger and thumb. But she forgot that her thumb and finger prevented the water from touching the skin just where she held him. And so, when he grew up, though no weapon could hurt him anywhere else, yet, when he was hit by an arrow in the left heel, he died of the wound. When anybody died, his body was buried or burned by his friends, and his soul left him and went down to Hades, till it reached the banks of the Styx. Here it waited for Charon's ferry-boat, about which you read in the story of Psyche. If its friends had buried its body properly, they had given it a small silver coin to pay the ferryman, who took the money and at once rowed it across the river. But if the soul had no money to pay for its passage, it had to wait for a hundred years, shivering and cold. Arrived on the other side, the soul was taken before the three judges of Hades--Minos, Æacus, and Rhadamanthus. All three had been kings on earth, so famous for wisdom and justice that, when they died, Pluto made them the judges of the dead. These decided what was to be done with the soul. If it had been virtuous during its life upon earth, it was allowed to enter Elysium, or the region of happiness; if it had been wicked, it was condemned to the horrible prison of Tartarus, there to be punished by torture.