"I can't say that I found it so, and I doubt if anybody else does.  All I remember is that I felt in a horrible fright, and that the water came rushing into my mouth much faster than I liked.  I had a terrible pain in one of my legs, which prevented me from swimming a stroke; then I heard a loud roaring noise, while all seemed confusion, except that I felt a most disagreeable choking sensation.  I really do not know what else happened; but I would advise you not to follow my example if you can help it."