72 Scientific Intelligence. 



on the north of Russia, as yet unpublished, of which he is the 

 author. Finally, Mr. Van den Broeck called attention to the 

 general bibliography of Belgium, which is to comprise a list of 

 all documents relating to the geology of that country published 

 in the course of the 19th century. 



"After a short discussion, the committee decided to confine its 

 efforts for the time being to the preparation of a list of the partial 

 geologic bibliographies already in existence. Each member of 

 the committee is to perform that part of the work which relates 

 to the country he represents. For Spain, Italy and Portugal, 

 which countries sent no representatives to Washington, the com- 

 mittee will address itself to the directors of the geological surveys 

 of these three states. Mr. Tietze agrees to take charge of the 

 bibliography of the Balkans, and Mr. de Margerie will try to fill 

 out any gaps that may exist in the collection of documents gath- 

 ered by the various members of the committee as regards Asia, 

 Africa and Oceanica. The manuscripts must be sent to the Sec- 

 retary before Easter, 1892, in order to be printed with the pro- 

 ceedings of the Washington meeting. 



"The projected list will comprise the detailed titles of works 

 entering into the following categories : 



" (l) Regional or local bibliographies. (Examples: Geological 

 Bibliography of Italy ; Geological Bibliography of the couuties 

 of England, by Whitaker ; Catalogue of the publications of the 

 American surveys, by Prime). 



" (2) Systematic bibliographies, that is to say, relating to a 

 defined group of facts, (e. g. Bibliography of the various classes 

 of rocks, inserted in Rosenbusch's Petrography ; Bibliography of 

 the Upper Jurassic, by Neumayr ; glaciers, volcanoes, etc.) 



" (3) Personal bibliographies. (Catalogues of the geologic 

 publications of one author, like those that often accompany necro- 

 logic notices ; Royal Society's catalogue of scientific papers, etc.) 



" (4) Catalogues of geologic maps, (e. g. Mapoteca geologica 

 Americana, by Marcou). 



" (5) Annual geologic bibliographies, either general (e. g. Geo- 

 logical Record ; Revue de geologie, by Delesse and de Lappar- 

 ent; Annuaire geologique, by Dagineourt) or special (e. g. Revue 

 geol. Suisse, by E. Favre and Schardt ; Bibliotheque geologique 

 de la Russie, by Nikitin ; Record of American Geology, by 

 Darton.) 



" (6) General tables of special periodicals or series, (e. g. the 

 Repertorium to the Neues Jahrbuch ftir Mineralogie ; Index to 

 the publications of the Geological Society of London, by Ormerod ; 

 Table of Paleontographica ; List of geological maps published in 

 the Quarterly Journal, by R. Bliss.) 



" (7) Printed catalogues of special libraries, (e. g. Catalogue of 

 the libraiy of the Geological Society of London ; Catalogue of 

 geologic works found in the libraries of Belgium, by Dewalque.) 



" As regards the scope to be given the work, the committee 

 thinks proper for the present to exclude all documents of purely 



