Another hour must have passed, during which we made out that the country on either side was flat and marshy, but we could see no sign of human habitation.  As far as could be made out, the river was about three hundred yards broad, and about this time we became aware that it must be very nearly low tide, for the stream which passed us was growing more and more sluggish, till at last it ceased ebbing, and the _Teaser_ began to swing slowly round, a sufficient indication that the tide had turned.