And many a time had passed, a brooding child,

With all his deep celestial thoughts to come,

Through that volcanic porch, but never saw

The wonder of the walls wherein he slept.

They saw, through mists, as I through mists discerned

Their own strange drama, that scene within the scene.

They climbed the very hill that Pascal made

A beacon-height of truth—the Puy de Dôme,

Where Florin Périer, at his bidding, took

His tubes of soft quicksilver; and, at the base,