What a strange substance is the human brain! Or rather,—for there is no need of generalizing the remark,—what an odd brain is mine! Would you believe it? Daily and nightly there come scraps of poetry humming in my intellectual ear—some as airy as birdnotes, and some as delicately neat as parlor-music, and a few as grand as organ-peals—that seem just such verses as those departed poets would have written had not an inexorable destiny snatched them from their inkstands. They visit me in spirit, perhaps desiring to engage my services as the amanuensis of their posthumous productions, and thus secure the endless renown that they have forfeited by going hence too early. But I have my own business to attend to; and besides, a medical gentleman, who interests himself in some little ailments of mine, advises me not to make too free use of pen and ink. There are clerks enough out of employment who would be glad of such a job. Good by! Are you alive or dead? and what are you about? Still scribbling for the Democratic? And do those infernal compositors and proof-readers misprint your unfortunate productions as vilely as ever? It is too bad. Let every man manufacture his own nonsense, say I. Expect me home soon, and—to whisper you a secret—in company with the poet Campbell, who purposes to visit Wyoming and enjoy the shadow of the laurels that he planted there. Campbell is now an old man. He calls himself well, better than ever in his life, but looks strangely pale, and so shadow-like that one might almost poke a finger through his densest material. I tell him, by way of joke, that he is as dim and forlorn as Memory, though as unsubstantial as Hope. Your true friend, P. P. S.—Pray present my most respectful regards to our venerable and revered friend Mr. Brockden Brown. It gratifies me to learn that a complete edition of his works, in a double-columned octavo volume, is shortly to issue from the press at Philadelphia. Tell him that no American writer enjoys a more classic reputation on this side of the water. Is old Joel Barlow yet alive? Unconscionable man! Why, he must have nearly fulfilled his century. And does he meditate an epic on the war between Mexico and Texas with machinery contrived on the principle of the steam-engine, as being the nearest to celestial agency that our epoch can boast? How can he expect ever to rise again, if, while just sinking into his grave, he persists in burdening himself with such a ponderosity of leaden verses?