It was evening. The last suggestion of daylight had faded out in the atmosphere, and the densest gloom enveloped the mountain-sides, and lay as with a pressure on the lake. The darkness was not such as clouds make; it was not the darkness of a veiled sky, of an obscured firmament, but of air possessed through and through, and thick with blackness. A hot night it was, and utterly calm. Not a moveme...