18 ANNUAL REPORT SMITHSONIAN INSTITUTION, 1909. 
logical Park, the International Exchanges, and the National Museum 
library. The library of the Bureau of American Ethnology, which 
is administered separately from the general library, has also had 
numerous additions. The Institution has continued the policy of send- 
ing to the Library of Congress public documents received in exchange 
for its publications. 
During the last two years special efforts have been made to com- 
plete the sets of the publications of scientific societies and learned 
institutions in the Smithsonian deposit, including serial publications 
in the main collection, resulting in the receipt of nearly 4,000 parts, 
an increase of more than 2,000 over the previous year. 
The reference books in the Institution and the general library, 
together with the sectional libraries in the National Museum and the 
library of the Bureau of American Ethnology, have been very freely 
consulted. 
The importance of the collection of scientific works in the hbrary 
of the Institution is becoming more and more appreciated each year 
by the scientific investigator, as 1s evidenced by the increase in the 
number of publications withdrawn for consultation, especially the 
proceedings and transactions of the scientific societies and learned 
institutions. 
The assistant librarian has been engaged in preparing a bibliog- 
raphy of aeronautical literature, which includes the indexing of about 
13,500 papers in periodicals and proceedings of aeronautical socie- 
ties, books and separate pamphlets on the subject, and comprises 
all available titles, domestic and foreign, published before July 1, 
1909. At the close of the year the manuscript was ready for the 
printer. 
PRESERVATION OF AMERICAN ANTIQUITIES. 
Under the terms of the act of Congress approved June 8, 1906, 
uniform regulations for the preservation of archeological and other 
objects on the public domain were prepared by the Secretaries of the 
Interior, War, and Agriculture, with the cooperation of the Smith- 
sonian Institution. Under rule 8 of these regulations applications 
for permits to carry on explorations or researches are referred to 
the Smithsonian Institution for recommendation, and during the 
year a number of such applications were acted on by the Institution. 
CONGRESSES, CELEBRATIONS, AND EXPOSITIONS. 
International Congress of Orientalists—At the Fifteenth Inter- 
national Congress of Orientalists, held in Copenhagen, Denmark, 
August 14 to 20, 1908, the Smithsonian Institution and the National 
Museum were represented by Dr. Paul Haupt, professor of semitic 
philology in Johns Hopkins University, and associate of the National 
Museum in historic archeology. At the suggestion of the Institution, 
