30 REPORT OF NATIONAL MUSEUM, 1921. 
after which Dr. R. A. Millikan, of the University of Chicago, de- 
livered an address on radium. <A large number of floral bouquets, 
contributions from local women’s organizations and others, were 
presented to Madame Curie. The Museum exhibits on the ground 
and first floors were open to inspection during the evening. In con- 
nection with Madame Curie’s visit, a special exhibit of radium ores, 
radioactive minerals, and radiographs was prepared by the depart- 
ment of geology and placed in the main passage of the Art Gallery, 
being removed later to a permanent location in the east end of the 
mineral hall on the second floor. 
Another reception in the Natural History Building, on the even- 
ing of October 19, enabled the delegates to the convention of the 
American Bankers’ Association, and their friends, to inspect the 
exhibition halls, as a part of the program for acquainting the bankers 
with governmental activities in Washington. 
The American Society of Mammalogists held its annual meeting 
in the Museum, with day sessions in room 42-43 on May 2, 3, and 4, 
and an evening session on May 2 in the auditorium. At the latter 
Mr. Arthur H. Fisher gave a talk on animals in zoological gardens, 
illustrated with many wonderful motion pictures recently made in 
the National Zoological Park and in the Philadelphia Zoo. From 
November 9 to 11 the auditorium was used during the daytime for 
the thirty-eighth stated meeting of the American Ornithologists 
Union. 
Under the auspices of the Geological Society of Washington, Mr. 
William T. Lee lectured in the auditorium on November 20, on the 
use of aerial photographs in geography. This was illustrated by 
stereopticon views of natural scenery and of objects of geographic 
interest and of submarine objects as seen from an airplane, and by 
a series of motion pictures taken from hydroplanes showing scenes 
on the Potomac, the Pacific fleet passing through the Panama Canal, 
and scenes along the coast of California. 
The regular annual meeting of the Audubon Society of the Dis- 
trict of Columbia, held in the hall on the evening of January 26, 
featured two illustrated addresses on bird life. 
The Washington Academy of Sciences arranged a lecture by Dr. 
E. B. Rosa, of the Bureau of Standards, on “ A reorganization of 
the civil service,” on the evening of October 21, and, under the 
auspices of the Osteopathic Association of the District of Columbia, 
Dr. A. G. Hildreth spoke on the evening of November 15 on “ How 
to escape insanity and nervous disorders.” 
Of timely interest also was a series of evening lectures in the audi- 
torium arranged by the School of Foreign Service of Georgetown 
University on the “ History and nature of international relations,” 
