Bulfinch's Mythology The Age of Fable
Page: 115"Finding that I was no match for him in the warrior's art, I resorted to others, and glided away in the form of a serpent. I curled my body in a coil, and hissed at him with my forked tongue. He smiled scornfully at this, and said, 'It was the labor of my infancy to conquer snakes.' So saying he clasped my neck with his hands. I was almost choked, and struggled to get my neck out of his grasp. Vanquished in this form, I tried what alone remained to me, and assumed the form of a bull. He grasped my neck with his arm, and, dragging my head down to the ground, overthrew me on the sand. Nor was this enough. His ruthless hand rent my horn from my head. The Naiades took it, consecrated it, and filled it with fragrant flowers. Plenty adopted my horn, and made it her own, and called it Cornucopia.
The ancients were fond of finding a hidden meaning in their mythological tales. They explain this fight of Achelous with Hercules by saying Achelous was a river that in seasons of rain overflowed its banks. When the fable says that Achelous loved Dejanira, and sought a union with her, the meaning is, that the river in its windings flowed through part of Dejanira's kingdom. It was said to take the form of a snake because of its winding, and of a bull because it made a brawling or roaring in its course. When the river swelled, it made itself another channel. Thus its head was horned. Hercules prevented the return of these periodical overflows, by embankments and canals; and therefore he was said to have vanquished the river-god and cut off his horn. Finally, the lands formerly subject to overflow, but now redeemed, became very fertile, and this is meant by the horn of plenty.
There is another account of the origin of the Cornucopia. Jupiter at his birth was committed by his mother Rhea to the care of the daughters of Melisseus, a Cretan king. They fed the infant deity with the milk of the goat Amalthea. Jupiter broke off one of the horns of the goat and gave it to his nurses, and endowed it with the wonderful power of becoming filled with whatever the possessor might wish.
The name of Amalthea is also given by some writers to the mother of Bacchus. It is thus used by Milton, Paradise Lost, Book IV.:
ADMETUS AND ALCESTIS
Aesculapius, the son of Apollo, was endowed by his father with such skill in the healing art that he even restored the dead to life. At this Pluto took alarm, and prevailed on Jupiter to launch a thunderbolt at Aesculapius. Apollo was indignant at the destruction of his son, and wreaked his vengeance on the innocent workmen who had made the thunderbolt. These were the Cyclopes, who have their workshop under Mount Aetna, from which the smoke and flames of their furnaces are constantly issuing. Apollo shot his arrows at the Cyclopes, which so incensed Jupiter that he condemned him as a punishment to become he servant of a mortal for the space of one year. Accordingly Apollo went into the service of Admetus, king of Thessaly, and pastured his flocks for him on the verdant banks of the river Amphrysus.