Whose sorrow first produced the Poplar race;

Their tears, while at a brother’s grave they mourn,

To golden drops of fragrant Amber turn.”

The Heliades, sisters of the rash Phaëthon (who had yoked the horses to the chariot of the Sun before his fatal drive), on finding his tomb upon the banks of the river Po, became distracted with grief, and for four days and nights kept mournful watch with their disconsolate mother around the grave. Tired out with their exhausting vigil, they endeavoured at length to obtain some repose for their weary limbs, when to their dismay they found them rooted to the ground. The gods, pitying their intense grief, had changed the seven sisters into Poplars, and their tears into Amber. Ovid thus narrates the incident:—

“Each nymph in wild affliction, as she grieves,

Would rend her hair, but fills her hand with leaves;

One sees her limbs transformed, another views

Her arms shot out and branching into boughs,

And now their legs, and breasts, and bodies stood

Crusted with bark and hardening into wood.