Mr. Cooper's letter is partly private and controversial, and partly political, and therefore any thing like an extended notice or review of it does not fall within the range which has been prescribed for the "Southern Literary Messenger." We cannot but express our regret, however, that Mr. Cooper should have suffered himself to be seduced into the arena of party politics. Upon that theatre he will meet with many distinguished rivals--whereas he had none or few to contend with on his favorite ground of romantic fiction. Is it possible that Mr. Cooper will suffer himself to be driven from the field on which he has earned so many enduring laurels, by the criticisms or even illnature of a few newspaper editors? Why, if we had been fortunate enough to write the "Red Rover," or even the "Bravo," we would have good humoredly defied the whole fraternity from Maine to New Orleans. Mr. Cooper forgets that there are thousands, who form their own opinions of literary works, without ever once thinking to turn over the pages of a daily or semiweekly instructor in order to learn its opinion. What if some of his finest romances have been criticised? Is there any human production which can be said to be perfect? Even Walter Scott acknowledged that his "Monastery" and probably some of his other works were total failures. We hope to spend many a long winter night yet in reading some of Mr. Cooper's new novels. DIARY OF AN ENNUYEE. _Boston: Lilly, Wait, Colman & Holden._ 1833. We opened this book, we confess, with some reluctance. The reading world has been so completely surfeited, especially in late years, by works of the same description,--by the diaries and letters of travellers and tourists,--and many of them have been so obviously designed to encourage the art of _book making_, rather than to impart solid instruction or intellectual pleasure, that we had almost resolved to proscribe altogether that branch of literature. France, Switzerland and Italy, have, moreover, been so often described, that neither the theatre of Napoleon's glory, nor the sublimities of Alpine scenery--nor the classical antiquities of the "Eternal City"--could impart any longer, it was supposed, the grace or freshness of novelty to the sketches of a new adventurer. Fortunately for us, however, we did not carry our resolution into effect, until we looked into the charming volume whose title is at the head of this article. For rich and powerful thought,--for glowing and beautiful description,--for chaste composition and elegance of taste, we have seldom or never seen it surpassed. It is, too, the production of a lady,--an Englishwoman of rank and fortune, who seems to have visited the sunny clime of Italy in order to restore a constitution wasted by disease, and if possible, alleviate some secret misery which was "feeding on her damask cheek" and withering her heart.--Notwithstanding her efforts to conceal her wretchedness, enough is told to excite the reader's sympathy and impart