The library of Mr. Joseph Knight, the editor of _Notes and Queries_, more nearly resembles a select and orderly bookseller's premises than a private individual's. It seems almost impossible to believe that the comparatively small house in Camden Square could contain between 12,000 and 13,000 volumes, and yet such is undoubtedly the case. Every room is crowded, and all the sides of the staircases are crowded with books from top to bottom. Mr. Knight's library is essentially a working one, but it is also something more. It is rich in editions of Froissart's 'Chronicles'; in editions of Rabelais--notably the excessively rare one printed by Michel le Noir, 1505; in Elzevir editions it includes a very extensive series; the series of the 'Restif de la Bretonne' includes about 200 volumes, being one of the few complete sets in London. A few of Mr. Knight's greatest rarities have come to him at very cheap rates--_e.g._, the 'Apologie pour Herodote,' 1566, without any of the _cartons_, or cancels, upon which the Genevese authorities insisted. This little volume, of which there are very few copies known, cost Mr. Knight 16s., neither buyer nor seller knowing its value at the time of the transfer. Another 'bargain' is the fine copy of Baudelaire, 'Les Fleurs de Mal,' 1857, which was fished out of a fourpenny box in High Street, Marylebone! Mr. Knight's collection of French plays and of works relating to the French stage is, like that of the English dramatists--ancient and modern--exceedingly extensive. He possesses, also, a few good Aldines, a number of Bodonis, and some books of Le Gason.