APPROBATION, is more particularly used, in speaking of recommendations of books, given by persons qualified or authorised to judge of them. Those appointed to grant licences and imprimatures, frequently express their approbations of books. Books were formerly subjected to a licenser in England (see 13th Car. II. c. 33.), which act is long since expired; and being incompatible with the noble principles of the Revolution, has never since been, and it is hoped never will be, revived.