redeemed by Hercules, who received, as a reward from the father, the knowledge of astronomy, and a celestial globe. This knowledge Hercules communicated to the Greeks; whence the fable has further said, that he eased for some time the labours of Atlas by taking upon his shoulders the weight of the heavens. According to some authors there were two other persons of that name, a king of Italy, father of Electra, and a king of Arcadia, father of Maia the mother of Mercury. _Virgil_,, _Æneid_, bk. 4, li. 481; bk. 8, li. 186. ――_Ovid_, _Metamorphoses_, bk. 4, fable 17.――_Diodorus_, bk. 3. ――_Lucan_, bk. 9, li. 667, &c.――_Valerius Flaccus_, bk. 5. ――_Hyginus_, fables 83, 125, 155, 157, 192.――_Aratus_, _Astronomia_. ――_Apollodorus_, bk. 1.――_Hesiod_, _Theogony_, li. 508, &c.――――A river flowing from mount Hæmus into the Ister. _Herodotus_, bk. 4, ch. 49. =Atossa=, a daughter of Cyrus, who was one of the wives of Cambyses, of Smerdis, and afterwards of Darius, by whom she had Xerxes. She was cured of a dangerous cancer by Democedes. She is supposed by some to be the Vashti of scripture. _Herodotus_, bk. 3, ch. 68, &c. =Atrăces=, a people of Ætolia, who received their name from Atrax son of Ætolus. Their country was called Atracia. =Atramyttium=, a town of Mysia. =Atrăpes=, an officer of Alexander, who, at the general division of the provinces, received Media. _Diodorus_, bk. 18. =Atrax=, son of Ætolus, or, according to others, of the river Peneus. He was king of Thessaly, and built a town which he called Atrax or Atracia. This town became so famous that the word _Atracias_ has been applied to any inhabitant of Thessaly. He was father of Hippodamia, who married Pirithous, and whom we must not confound with the wife of Pelops, who bore the same name. _Propertius_, bk. 1, poem 8, li. 25.――_Statius_, bk. 1, _Thebiad_, li. 106.――_Ovid_, _Metamorphoses_, bk. 12, li. 209.――――A city of Thessaly, whence the epithet of Atracius.――――A river of Ætolia, which falls into the Ionian sea. =Atrebātæ=, a people of Britain, who were in possession of the modern counties of Berks, Oxford, &c. =Atrĕbātes=, now _Artois_, a people of Gaul, who, together with the Nervii, opposed Julius Cæsar with 15,000 men. They were conquered, and Comius, a friend of the general, was set over them as king. They were reinstated in their former liberty and independence, on account of the services of Comius. _Cæsar_, _Gallic War_, bk. 2, &c. =Atrēni=, a people of Armenia.