66 The American Geologist. January, 1892 
“(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 necrologic notices; 
Royal Society’s catalogues of scientific papers, etc.) 
“(4) Catalogues of geologic maps. (e. g. Mapoteca geologica Ameri- 
cana, by Marcou.) 
“(5) Annual geologic bibliographies either general (e. g. Geological 
Record: Revue de geologie, by Delesse and de Lapparent; Annuaire 
geologique, by Dagincourt), 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 Reperto- 
rium to the Neues Jahrbuch fur Mineralogie; Index to the publications 
of the Geological Society of London, by Omerod; Table of Paleonto- 
graphica; List of the geological maps published in the Quarterly Jour- 
nal, by R. Bliss.) 
“(7) Printed catalogues of special libraries. (e. g. Catalogue of the 
library 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 to the work, the committee thinks 
proper for the present to exclude all documents of purely mineralogic 
or paleontologic nature; on the other hand, information relating to 
petrography, physical geography, applied geology, mineral waters and 
prehistoric archeology will be included. For the rest, full latitude is 
left in this respect to the collaborators, the editor being empowered to 
extend or abridge manuscripts with a view of securing proper uniform- 
ity in publication. 
“Important maouscript bibliographies, the existence of which may be 
known to the members of the committee, are to be indicated in the 
proper places, stating name and address of author. 
“The publication will be in French, but manuscripts may be prepared 
in the language of the country whence they come, to be translated after- 
ward under the direction of the editor. 
“Titles must always be given in the language of the original publica- 
tion; they will not be followed by a French translation except in case 
they belong to a language other than English, German, Italian or Span- 
ish. The indication of the author’s name, place of publication (with 
the publisher’s name in the case of a separate work), date, size and 
number of pages, shall be as exact and detailedas possible; furthermore 
it is desired to have stated the approximate number of entries contained 
in each bibliography, adding summary information regarding its nature, 
such as: ‘Alphabetic catalogue by authors’ names; Catalogue classified 
by order of dates; Simple list of titles; Each article is followed by a re- 
sume; The number of plates is not given; etc.’ The limiting dates of 
