REPORT OF THE SECRETARY. 9] 
Office reference library.—The accessions for the office library, which 
includes the Astrophysical Observatory and the National Zoological 
Park, amounted to 639 publications, distributed as follows: Office 
library, 358 volumes and 20 pamphlets; Astrophysical Observatory, 
89 volumes, 11 parts, 18 pamphlets; National Zoological Park, 140 
volumes. and 3 pamphlets. There was a circulation of 146 volumes. 
Aeronautical collection—Continued interest has been manifested 
in the institution’s collection of aeronautical publications, which has 
been of special value to aeronautical-research workers in the Army, 
the Navy, and scientific institutions. Seventy-eight titles have been 
added during the year. The Bibliography cf Aeronautics, com- 
pleted last year, is being printed by the National Advisory Commit- 
tee for Aeronautics, and will be ready for distribution shortly. 
Reading room.—No new titles of particular interest have been 
added to the reading room during the year. In the interest of war- 
time economy on the part of the publishers, several popular maga- 
zines were not received in exchange. The number of magazines 
loaned during the year was 3,140. 
Employees’ ibrary—The number of loans in the employees’ library 
was 832. The collection has been recatalogued, classified, and rear- 
ranged on the shelves. The volumes in the stacks are being rear- 
ranged, so that the magazines in greatest demand will be rendered 
more accessible. 
Art room.—The collection in the art room, including the pieces of 
statuary as well as the books, have been carefully gone over during 
the year, and those that could not be considered as relating to the 
‘fine arts were sent elsewhere in order to make room for material 
which should be placed here. The large cases were remodeled in 
order to take care of the large portfolios of prints, especially those 
of the Marsh collection, and other books which should be under cover. 
The whole contents of this room is rearranged, catalogued, classified, 
and put in thorough order. 
De Peyster collection—Author cards for 1,722 titles of books in 
the De Peyster collection have been made, and the volumes on French 
history, numbering 869 titles, have been arranged on the shelves and 
rendered accessible. 
NATIONAL MUSEUM LIBRARY. 
The loans made by the Museum hbrary during the year were 13,913, 
an increase over last year of 2,676. There were catalogued 1,048 
volumes, 3,229 pamphlets; 62 volumes and 115 pamphlets were re- 
catalogued; 1,322 volumes were sent to the Government bindery and 
710 returned. 
The most important acquisition was a set of catalogues of the 
J. Pierpont Morgan art collection, presented by J. Pierpont Morgan, 
