CHAPTER XXII.
Dumbarton Rock.
All obeyed the voice of their commander, and retired to rest.

But the eyes of Edwin could not close; his eager spirit was already on the walls of Dumbarton.

His rapid mind anticipated the ascent of his general and his troop.

But an imagination no less just than ardent suggested the difficulties attending so small a force assailing so formidable a garrison, without some immediate knowledge of its relative situations.

A sudden thought struck him.