I was startled by this incident, and cast a fearful glance behind, to discover by whom it was uttered.

The spot where I stood was buried in dusk, but the eminences were still invested with a luminous and vivid twilight.

The speaker, however, was concealed from my view.
I had scarcely begun to wonder at this occurrence, when a new occasion for wonder, was afforded me.

A few seconds, in like manner, elapsed, when my ditty was again rehearsed, with a no less perfect imitation, in a different quarter.....

To this quarter I eagerly turned my eyes, but no one was visible....