It takes five persons to make a collectivite. Books written by four persons appear under the first of the authors' names, but the addition of a fifth collaborator transfers the book to section 2.
Such, at least, is the course laid down in the Rapport, but from M. Delisle's Introduction we gather that the rules determining the borders of sections 2 and 3, and the internal economy of those sections, have not yet been finally determined. Among the projected groups of special works (many of which will also appear under author's names in section i) are the following : — (i) Societes savantes — the publications of learned societies, arranged in order of countries and then of provinces or towns. It is reassuring to find this "group" after the abuse that has been levelled at the heading Academies in the British Museum catalogue, and rather startling to find the old territorial classification of " academies " revived, which that catalogue long since abandoned for an arrangement under the alphabetical order of towns. (2) Public Libraries and Museums — catalogues, reports, &c. (3) Music. (4) Maps. (5) Factums, or legal pleas, of which the catalogue has already in part been published. (6) Acts of sovereign powers. (7) Parliamentary and administrative documents. (8) Newspapers and reviews. (9) Episcopal charges. (10) Liturgies. The complete catalogue, drawn up on the fore- going lines, is expected to contain two million entries, which will, however, include a number of cross-references from editors, translators, &c.
