This recital seems to leave little to be said in Stein's favor, but no bibliographer who has made a serious effort to write a useful book has ever failed to be helpful. Any list of 5500 bibliographies--the figure is Besterman's--will contain titles and information worth noting and remembering. He calls attention to books that other men have not seen or have neglected to cite. For example, I have not seen "Ahm. Zeki-Bey, _Elmevsonat_ (Boulak, 1904)," which he describes (p. 264) as a bibliography of Arabic encyclopedias, mentioned elsewhere. We owe to him the interesting and important fact that the unpublished manuscript of Mazzuchelli's enormous work, _Gli scrittori d'Italia_, is in the Vatican Library.[181] He adds many titles to those cited by Petzholdt and Vallée. I lay aside the _Manuel_ with the regret that Stein's zeal has given us a less useful book than we might have hoped for. Had he named, as I have suggested, the three thousand bibliographies lacking in Vallée and had he continued the collection from Vallée's supplement of 1887 to his own publication in 1897, he would have given us an invaluable book. What we have is one more demonstration of the unwillingness of bibliographers in his century to join hands with their predecessors and contemporaries. FOOTNOTES: [126] For identification and description of these bibliographies see Theodore Besterman, _The Beginnings of Systematic Bibliography_ (2d ed.; [Oxford] and London, [1936]) and Petzholdt. [127] He probably consulted the many treatises on what was then called _historia litteraria_, but these were historical accounts of the development of the various disciplines rather than bibliographies. Two brief guides to these great specialized bibliographies are well hidden. They are Benjamin Hederich, _Notitia auctorum antiqua & media, oder Leben, Schrifften, Editiones und Censuren der Biblischen und entweder noch gantz oder auch nur in considerablen Fragmentis vorhandenen fürnehmsten Griechischen und Lateinischen Kirchen-Scholastischen- und Profan-Scribenten_ (Wittenberg, 1714), "Einleitung," pp. 2-144 and G. C. Hamberger, _Zuverlässige Nachrichten von den vornehmsten Schriftstellern vom Anfange der Welt bis 1500_ (4 v.; Lemgo, 1756-1764), I, 1-54, "Erste vorläufige Abhandlung. Von der Kentnis der Schriftsteller." These very interesting and instructive compilations are selective guides to the best bibliographies and are intended to aid students. They are limited almost exclusively to bibliographies of classical Greek and Latin literature, church history, and the related disciplines. Since the books in which they appear deal only with authors and subjects belonging to the period before 1500 and the bibliographies are similarly limited in scope, the usefulness of the bibliographies is obviously confined to giving information about the best current reference works in a few fields. No doubt the abundant bibliographical information in such a work as Heinrich Zedler,