Thus, that delightful writer, WASHINGTON IRVING, in his Tales of a Traveller. But, it happened to me the other night to be lying: not with my eyes half closed, but with my eyes wide open; not with my nightcap drawn almost down to my nose, for on sanitary principles I never wear a nightcap: but with my hair pitchforked and touzled all over the pillow; not just falling asleep by any means, but glaringly, persistently, and obstinately, broad awake. Perhaps, with no scientific intention or invention, I was illustrating the theory of the Duality of the Brain; perhaps one part of my brain, being wakeful, sat up to watch the other part which was sleepy. Be that as it may, something in me was as desirous to go to sleep as it possibly could be, but something else in me would not go to sleep, and was as obstinate as George the Third. Thinking of George the Third—for I devote this paper to my train of thoughts as I lay awake: most people lying awake sometimes, and having some interest in the subject—put me in mind of BENJAMIN FRANKLIN, and so Benjamin Franklin’s paper on the art of procuring pleasant dreams, which would seem necessarily to include the art of going to sleep, came into my head. Now, as I often used to read that paper when I was a very small boy, and as I recollect everything I read then as perfectly as I forget everything I read now, I quoted ‘Get out of bed, beat up and turn your pillow, shake the bed-clothes well with at least twenty shakes, then throw the bed open and leave it to cool; in the meanwhile, continuing undrest, walk about your chamber. When you begin to feel the cold air unpleasant, then return to your bed, and you will soon fall asleep, and your sleep will be sweet and pleasant.’ Not a bit of it! I performed the whole ceremony, and if it were possible for me to be more saucer-eyed than I was before, that was the only result that came of it. Except Niagara. The two quotations from Washington Irving and Benjamin Franklin may have put it in my head by an American association of ideas; but there I was, and the Horse-shoe Fall was thundering and tumbling in my eyes and ears, and the very rainbows that I left upon the spray when I really did last look upon it, were beautiful to see. The night-light being quite as plain, however, and sleep seeming to be many thousand miles further off than Niagara, I made up my mind to think a little about Sleep; which I no sooner did than I whirled off in spite of myself to Drury Lane Theatre, and there saw a great actor and dear friend of mine (whom I had been thinking of in the day) playing Macbeth, and heard him apostrophising ‘the death of each day’s life,’ as I have heard him many a time, in the days that are gone.