=Bru´tus, Mar´cus Ju´nius=, the destroyer of Cæsar, conspired with many of the most illustrious citizens of Rome, against Cæsar, and stabbed him in Pompey's Basilica. The tumult following the murder was great, but the conspirators fled to the Capitol, and by proclaiming freedom and liberty to the populace, for the time established tranquillity. Antony, however, soon obtained the popular ear, and the murderers were obliged to leave Rome. Brutus retired into Greece, where he gained many friends. He was soon pursued by Antony, who was accompanied by the young Octavius. The famous battle of Philippi followed, in which Brutus and his friend Cassius, who commanded the left wing of the army, were totally defeated. Brutus fell on his own sword, B.C. 42, and was honored with a magnificent funeral by Antony. Plutarch relates that Cæsar's ghost appeared to Brutus in his tent before the battle of Philippi, warning him of his approaching fall. =Buceph´alus.= A horse of Alexander's, so frequently named by writers that the term has become proverbial. Alexander was the only person that could mount him, and he always knelt down for his master to bestride him. =Ca´cus.= A famous robber, son of Vulcan and Medusa, represented as a three-headed monster vomiting flames. He resided in Italy, and the avenues of his cave were covered with human bones. When Hercules returned from the conquest of Geryon, Cacus stole some of his cows, which Hercules discovering, he strangled Cacus. =Cad´mus=, son of Agenor, king of Phoenicia, and Telephassa, or Agriope, was ordered by his father to go in quest of his sister Europa, whom Jupiter had carried away. His search proving fruitless, he consulted the oracle of Apollo, and was told to build a city where he saw a heifer stop in the grass, and call the country around Boeotia. He found the heifer, as indicated by the oracle. Requiring water, he sent his companions to fetch some from a neighboring grove. The water was guarded by a dragon, who devoured those who were sent for it, and Cadmus, tired of waiting, went himself to the place. He attacked the dragon and killed it, sowing its teeth in the ground, on which a number of armed men rose out of the earth. Cadmus threw a stone amongst them, and they at once began fighting, and all were killed except five, who assisted him in building the city. Cadmus introduced the use of letters in Greece--the alphabet, as introduced by him, consisting of sixteen letters. =Cadu´ceus.= A rod entwined at one end with two serpents. It was the attribute of Mercury, and was given to him by Apollo in exchange for the lyre.