The Duke of Devonshire's library at Chatsworth is one of the most varied and extensive in the kingdom. An admirable catalogue of it was printed in four volumes in 1879, and its value as a bibliographical compilation may be estimated by the fact that the only copy which occurred in the market during the past eight years fetched L10. The library has been formed by the taste and learning of several generations of the Cavendish family, from the middle of the sixteenth century to the present day. The rarest book which it contains is the 'Liber Veritatis,' or collection of original designs of Claude Lorraine. The greatest additions were made to the library by William Spencer, sixth Duke, who, indeed, may be called its founder in its present form. This nobleman, on the advice of Tom Payne, offered L20,000 for the purchase of Count McCarthy's celebrated collection. The offer was declined, but the Duke was a purchaser to the extent of L10,000 of the choicer portions of the library of Thomas Dampier, Bishop of Ely, composed, for the most part, of Greek and Latin classics. The Duke bought largely at the Stanley, Horn Tooke, Towneley, Edwards, and Roxburghe sales. The library possesses the unique collection of plays formed by John Philip Kemble, and for which L2,000 were paid in 1821. The chief features of the library comprise a fine series of the editions of the Bible and of Boccaccio; there are also twenty-three works of Caxton, the most extensive in private hands, now that the Althorp collection has, or is about to, become public property. There are two dozen books from the press of Wynkyn de Worde, and no less than 200 editions of Cicero, including a magnificent copy of the _editio princeps_. The libraries of two members of the Roxburghe Club have been dispersed by auction during the last few years--the Earl of Crawford's, in 1887 and 1889, to which reference has already been made; and Mr. Thomas Gaisford's, in 1890. The former has still a considerable number of important books, to which he is constantly adding; whilst his eldest son is worthily sustaining the reputation of the family for its love of rare and beautiful books. Mr. Gaisford has also a very large library, but he himself describes the books as of no special interest.