They had been grinding out wealth and happiness and peace, but now they bade the magic stones to grind something very different.

Presently, as the great stones moved round and round, Frode, who still stood by, heard one chant in a low, sing-song voice,—

"I see a fire east of the town—the curlews awake and sound a note of warning. A host approaches in haste, to burn the dwelling of the king."

And the next took up her song,—

"No longer will Frode sit on his throne, and rule over rings of red gold and mighty millstones. Now must we grind with all our might—and, behold! red warriors come forth—and revenge, and bloodshed, and ruin."

Then Frode shook from head to foot in his terror, for he heard the tramp of a mighty host of warriors advancing from the sea. And as he looked for a way of escape, the braces of the millstones broke with the strong grinding, and fell in two. And the whole world shook and trembled with the mighty shock of that breaking.

But through the crash and din came the voices of the Giant-Maidens, loudly chanting,—

"We have turned the stone round;
Though weary the maidens,
See what they have ground!"

And that same night a mighty sea-king came up and slew Frode and plundered his city.

When he had sacked the city, the sea-king took on board his ship the two Giant-Maidens, and with them the broken millstones. And he bade them begin at once to grind salt, for of this he had very scanty store.