It has been agreed for some centuries past, that the only modern Maecenas is the publisher. The days of patrons are past; and the author is forced to look for the reward of his labour to the man who, by selling the greatest number of copies to the public, can bestow the greatest number of pounds upon his pains. In order to augment this amount, the bibliopole naturally consults the taste of his customers; and nearly the sole remaining customers of the modern bookseller are--the circulating libraries. For what man in his senses who, for an annual mulct of half-a-dozen sovereigns, commands the whole range of modern literature, would waste his substance in loading his house with books of doubtful interest? Who that, by a message of his servant into Bond Street, procures the last new novel cut and dry, instead of wet from the press, and demanding the labour of the paper-knife, would proceed to the extremity of a purchase? And the result is, that Messrs Folio and Duodecimo, in order to procure satisfactory orders from the circulating libraries of the multitudinous cities of this deluded empire, issue orders to their helots, Mr Scribblescrawl and Mrs Wiredrawn, requiring them to produce per annum so many sets of three volumes, adapted to the atmosphere wherein they are fated to flourish. It is an avowed fact, that the publishers of the day will purchase the copyrights of only such works as "the libraries will take;" which libraries, besotted by the mystic charm of three volumes, immutable as the sacred triad of the Graces or Destinies, would negative without a division such a work as the "Vicar of Wakefield" were it now to undergo probation. "Robinson Crusoe" or "Paul and Virginia" would be returned unread to their authors, with a civil note of "extremely sorry to decline," &c. "The Man of Feeling" would be made to feel his insignificance. "Thinks I to Myself" might think in vain; and the "Cottagers of Glenburnie" retain their rural obscurity. So much for the measure of the maw of the circulating library. Of its taste and palate it is difficult to speak with moderation; for those of Caffraria or Otaheite might be put to the blush. The result, however, of this fatal ascendancy is, that not a publisher who has the fear of the _Gazette_ before his eyes, presumes to hazard a guinea on speculations in the belles-lettres. Poetry is seldom, if ever, published except at the cost of the poet; and the foreman of one of the leading London houses is deputed to apprize aspiring rhymesters, that "his firm considers poetry a mild species of insanity"--_Anglice_, that it does not suit the appetite of the circulating library! For behold! this despot of bookmakers must have length, breadth, and thickness, to fill the book boxes dispatched to its subscribers in the country, as well as satisfy in town the demands of its charming subscriber, Lady Sylvester Daggerwood, and all her daughters.