=Æthūsa=, a daughter of Neptune by Amphitrite, or Alcyone, mother by Apollo of Eleuthere and two sons. _Pausanias_, bk. 9, ch. 20.――――An island near Lilybæum. _Pliny_, bk. 3, ch. 8. =Ætia=, a poem of Callimachus, in which he speaks of sacrifices, and of the manner in which they were offered. _Martial_, bk. 10, ltr. 4. =Ætion=, or =Eetion=, the father of Andromache, Hector’s wife. He was killed at Thebes, with his seven sons, by the Greeks.――――A famous painter. He drew a painting of Alexander going to celebrate his nuptials with Roxane. This piece was much valued, and was exposed to public view at the Olympic games, where it gained so much applause that the president of the games gave the painter his daughter in marriage. _Cicero_, _Brutus_, ch. 18. =Ætna=, a mountain of Sicily, now called Gibello, famous for its volcano, which, for about 3000 years, has thrown out fire at intervals. It is two miles in perpendicular height, and measures 180 miles round at the base, with an ascent of 30 miles. Its crater forms a circle about 3½ miles in circumference, and its top is covered with snow and smoke at the same time, whilst the sides of the mountain, from the great fertility of the soil, exhibit a rich scenery of cultivated fields and blooming vineyards. Pindar is the first who mentions an eruption of Ætna; and the silence of Homer on the subject is considered as a proof that the fires of the mountain were unknown in his age. From the time of Pythagoras, the supposed date of the first volcanic appearance, to the battle of Pharsalia, it is computed that Ætna had 100 eruptions. The poets supposed that Jupiter had confined the giants under this mountain, and it was represented as the forge of Vulcan, where his servants the Cyclops fabricated thunderbolts, &c. _Hesiod_, _Theogony_, li. 860.――_Virgil_, _Æneid_, bk. 3, li. 570.――_Ovid_, _Metamorphoses_, bk. 5, fable 6; bk. 15, li. 340.――_Silius Italicus_, bk. 14, li. 59. =Ætōlia=, a country bounded by Epirus, Acarnania, and Locris, supposed to be about the middle of Greece. It received its name from Ætolus. The inhabitants were covetous and illiberal, and were little known in Greece, till after the ruin of Athens and Sparta they assumed consequence in the country, and afterwards made themselves formidable as the allies of Rome, and as its enemies, till they were conquered by Fulvius. _Livy_, bk. 26, ch. 24, &c.――_Florus_, bk. 2, ch. 9.――_Strabo_, bks. 8 & 10.――_Mela_, bk. 2, ch. 3.――_Pliny_, bk. 4, ch. 2.――_Pausanias_, bk. 10, ch. 18.――_Plutarch_, _Titus Flamininus_. =Ætōlus=, son of Endymion of Elis and Iphianassa, married Pronoe, by whom he had Pleuron and Calydon. Having accidentally killed Apis son of Phoroneus, he left his country, and came to settle in that part of Greece which has been called from him Ætolia. _Apollodorus_, bk. 1, chs. 7 & 9.――_Pausanias_, bk. 5, ch. 1.