Book 8
18.5
For glass, crystal, murrhine vessels, other articles men make of stone, and pottery, are all broken by the water of the Styx, while things of horn or of bone, with iron, bronze, lead, tin, silver and electrum, are all corroded by this water. Gold too suffers just like all the other metals, and yet gold is immune to rust, as the Lesbian poetess bears witness and is shown by the metal itself.
18.6
So heaven has assigned to the most lowly things the mastery over things far more esteemed than they. For pearls are dissolved by vinegar, while diamonds, the hardest of stones, are melted by the blood of the he-goat. The only thing that can resist the water of the Styx is a horse's hoof. When poured into it the water is retained, and does not break up the hoof. Whether Alexander, the son of Philip, met his end by this poison I do not know for certain, but I do know that there is a story to this effect.
18.7
Above Nonacris are the Aroanian Mountains, in which is a cave. To this cave, legend says, the daughters of Proetus fled when struck with madness; Melampus by secret sacrifices and purifications brought them down to a place called Lusi. Most of the Aroanian mountain belongs to Pheneus, but Lusi is on the borders of Cleitor.
