The _Internationaler Jahresbericht der Bibliographie_, which flourished from 1930 to 1940 under the editorship of Joris Vorstius, enables us to survey quickly the current annual production of bibliographies. Critical comments attached to the titles make it one of the most readable bibliographies of bibliographies. Like caviar, the genre is digestible only by those who have acquired a taste for it. The organization of the _Internationaler Jahresbericht_ is skillful, and the comments are judicious and instructive. Since Vorstius was editor of the previously mentioned _Internationale Bibliographie des Buch- und Bibliothekswesens_ as well as the _Zentralblatt für Bibliothekswesen_, he saw a very large number of bibliographies. He was compelled to hold very carefully to the definitions of his closely related and very similar tasks. The _Internationaler Jahresbericht_ of course lists only bibliographies. The H. W. Wilson Co. has published the most comprehensive of all periodical surveys of bibliography. Starting in 1938, the quarterly issues are cumulated in annual volumes and these are, in turn, cumulated in volumes for periods of variable length. A cumulation of the bibliographies published in the years between 1937 and 1942 appeared in 1945, and a second cumulation for the years 1943-1946 appeared in 1948. This is the first virtually complete account of current bibliographical production, and the picture is amazing. Between 1937 and 1942 some fifty thousand bibliographies were published. The editors of the _Bibliographic Index_ have classified them in almost ten thousand categories.