As Mr. Collier had entered a play of Aristophanes under Mitchell, and the works of Shakespeare under Schlegel, as he had put an anonymous English book under a writer to whom it was only attributed conjecturally, and had catalogued a collection of plays in such a manner as to suggest that it was a history of the drama, the justice of Mr. Jones’ characterization could not be disputed. The Commissioners were, doubtless, justified in the unexpressed conclusion at which they evidently arrived, that such blunders, committed by a man of Mr. Collier’s attainments, must be attributable to the fundamental errors of his system. Mr. J. Bruce, Mr. G. L. Craik, and other advocates of hasty work and concise catalogues, would have fared no better at the hands of Mr. Winter Jones. One of them, indeed, Mr. J. G. Cochrane, of the London Library, had actually produced a Catalogue, the unscientific character of which was pungently exposed by Professor De Morgan, by far the most bibliographically competent of all the witnesses, and whose profound acquaintance with early mathematical literature enabled him to demonstrate what research, accuracy, and scholarship, the correct description of such literature demands. Another valuable witness was Mr. John Wilson Croker, whose evidence was in general full of good sense, and who brought forward the scheme (already independently suggested by Mr. E. Roy of the Library) for keeping up the Catalogue on movable slips pasted on the leaf, and thus admitting of displacement when it became necessary to insert new matter. This plan was subsequently adopted, and proved adequate for all practical purposes until recently, when, from the enormous bulk of the Manuscript Catalogue, printing has been adopted.