The mouth of that cave is two fathoms wide for a longish bit of channel; and, Mary dear, if I had not been supported by continual thoughts of you, I must have gone against the sides, or downright to the bottom, from the waves keeping knocking me about so. I may tell you that I felt that I should never care again, as my clothes began to bag about me, except to go down to the bottom and be quiet, but for the blessed thought of standing up some day, at the 'hymeneal altar, ' as great people call it, with a certain lovely Mary.