Sicut aquæ tremulum labris ubi lumen ahenis Sole repercussum, aut radiantis imagine lunæ, Omnia pervolitat late loca, jamque sub auras Erigitur, summique ferit laquearia tecti.

VIRG. EN. VIII.

So water, trembling in a polish'd vase,
Reflects the beam that plays upon its face;
The sportive light, uncertain where it falls,
Now strikes the roof, now flashes on the walls.