LIBRARY.

Periodicals. About 300 periodical publications are regularly received and recorded on cards. Completed volumes are bound and then entered in the accession book.

Books accessioned.-There were entered in the accession book, in which is kept the complete record of books permanently added to the library, 2,731 books, making the total number of books entered 64,078.

Cataloguing. During the year the work of cataloguing the publications of the various national surveys, the Canadian Geological Survey, and the various State geological surveys was completed and cards were printed by the Library of Congress. All separate works on mineralogy and petrology and text-books and general works on the geology of North and South America and of Great Britain have been catalogued. In economic geology the reports of foreign and State mining bureaus and text-books and general papers on mining and metallurgy were catalogued. Material received during the year was catalogued as received, except small and unimportant pamphlets. Map cataloguing.-In cataloguing the publications of various geological surveys it was found necessary to catalogue a considerable number of maps. A card catalogue of maps was begun, arranged by countries and States or provinces, and it now contains approximately 1,000 cards.

Shelf listing. Some difficulty having been experienced in finding books classified by subjects, it was determined to devote all the time possible to shelf listing the books and using the cards as temporary catalogue cards. All books on geology, paleontology, geography, mathematics, geodesy, astronomy, surveying, and engineering, not heretofore catalogued, have been shelf listed. These number 4,435. New equipment.-Six steel pamphlet cases (four octavo and two quarto size) were installed, also one steel card cabinet case to hold the author and subject card catalogues. This completes the equipment purchased under the special appropriation of $7,000.

Foreign and domestic exchanges.-All the book publications are regularly sent to 750 institutions and individuals, and from them are received a considerable part of the additions to the library. About 450 sets of map publications are also distributed to exchanges.

Bibliographic work.—The annual bibliography and index of North American geology, paleontology, petrology, and mineralogy for 1905 was completed, combined with the bibliographies for 1901 to 1904, and published as Bulletin No. 301.