Yes, there she was, dead to windward of us, driving along, as I could just make out, under her main topgallant-sail; but all was perfectly dark on board her, and there was no sign of the slaver that I could see. But I presumed that they had her in sight from the brig, or we should have heard something from the latter.  For it was at this time very dark, and blowing strong, and the conditions generally were such that the matter of as little as even two or three miles might make all the difference between seeing and not seeing the stranger.