A development characteristic of nineteenth-century bibliography consists in the publication of collectanea at more or less regular intervals in appropriate journals. These collectanea may be lists of recently published books and articles, books received, or brief critical accounts of current publications. Since they do not intend to be comprehensive, we need not examine at length those including bibliographies. A. G. S. Josephson mentions perhaps a score of such periodical bibliographies of bibliographies.[146] Perhaps the earliest and most influential publications of this sort were those in the _Anzeiger für Literatur der Bibliothekswissenschaft_ (1840-1846), which was continued until 1886 by the _Neuer Anzeiger für Bibliographie und Bibliothekswissenschaft_. The editor, Julius Petzholdt, used these lists of current bibliographical publications, bibliographies of particular subjects, and critical comments on antiquarian catalogues in the making of his _Bibliotheca bibliographica_, but those published after 1866, when the _Bibliotheca_ appeared, are not very well-known. Various other journals devoted to bibliography, bibliophily, library science, criticism, and the interests of publishers and dealers printed similar collectanea. For example, a very full and carefully compiled list of current bibliographical publications may be found in the _Centralblatt für Bibliothekswesen_, which was founded in 1884. These numerous lists are convenient collections of useful materials, but I am not sure that the makers of bibliographies of bibliographies have, with the exception of Petzholdt, made full use of them. With the rise of annual bibliographies of bibliographies[147] that aim at comprehensiveness their importance has somewhat declined. I have mentioned these collectanea because they represent a new development and are to some extent the foundation of the book next to be discussed.