As soon as I arrived in sight of the front of the house, my attention was excited by a light from the window of my own chamber.

No appearance could be less explicable.

A meeting was expected with Carwin, but that he pre-occupied my chamber, and had supplied himself with light, was not to be believed.

What motive could influence him to adopt this conduct?
Could I proceed until this was explained?
Perhaps, if I should proceed to a distance in front, some one would be visible.

A sidelong but feeble beam from the window, fell upon the piny copse which skirted the bank.
As I eyed it, it suddenly became mutable, and after flitting to and fro, for a short time, it vanished.