64 REPORT OF NATIONAL MUSEUM, 1911. 



from the central library was 23,886, including 5,582 obtained from 

 the Library of Congress and other libraries. The records of the 

 library consist of an accession register in book form, a card catalogue 

 by authors, a card index of periodicals and a lending record also kept 

 by means of cards. 



The quarters occupied by the central library in the old Museum 

 building have long been greatly overcrowded, and during the year a 

 thorough overhauling of their contents was begun. Space in ad- 

 joining galleries was allotted for the purpose and several additional 

 persons were temporarily employed. The work is expected to be 

 completed during the current year, and is preliminary to the trans- 

 fer to the new building of all publications relating to natural history 

 and anthropology. The present quarters will then furnish sufficient 

 room for the works on the arts and industries, to which subjects the 

 older building will be devoted. 



PHOTOGRAPHY. 



The photographic laboratory was called upon for a somewhat 

 larger amount of work than usual, as is indicated by the number of 

 negatives and prints produced. Besides the making of illustrations 

 for the scientific publications of the Museum, photography was 

 extensively resorted to for pictorial additions to the catalogues and 

 other records of the collections in order to insure the identity of 

 especially valuable objects; and was also used for preparing pictures 

 for the exhibition halls and for reproducing plans and sketches 

 relating to the buildings and to furniture and other equipment. The 

 work of the year included the making of 2,330 negatives, 3,906 silver 

 prints, 2,813 velox prints, 2,299 blue prints, and 102 van dyke prints. 



CONGRESSES AND MEETINGS. 



The Museum was represented at two important scientific con- 

 gresses abroad, both of which were held during the summer of 1910. 

 The first of these was the Eighth International Zoological Congress, 

 at Gratz, Austria, from August 15 to 20, at which the delegates on 

 the part of the Museum, as also of the Smithsonian Institution and 

 the United States Government, were Dr. Charles Wardell Stiles, of 

 the Bureau of Public Health and Marine-Hospital Service; Mr. 

 Austin H. Clark, of the Museum staff; Dr. William R. Kellicott, of 

 Goucher College, Baltimore; and Dr. Herbert Haviland Field, di- 

 rector of the Concilium Bibliographicum, Zurich, Switzerland. The 

 other was the second meeting of the Seventeenth International Con- 

 gress of Americanists, held in the city of Mexico from September 8 

 to 14, which was attended by Dr. Ales Hrdlicka, curator of physical 

 anthropology, as a representative of the Museum, the Institution, 

 and the Government. 



