The water, seen through the fog, had a pallid, unpleasant color.

Eye became of little use, and it was ear upon which the sentinel must depend.
Shif'less Sol judged that it was about midnight, and he became troubled.
The sixth sense, that comes of acute natural perceptions fortified by long habit, was giving him warning.

It seemed to him that he felt the approach of something.

He raised himself up a little higher and stared anxiously into the thick mass of white fog.

He could make out nothing but a little patch of water and a few ghostly tree trunks near by.