30 EEPOKT OF NATIONAL, MUSEUM, 1921. 



after which Dr. E. 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 Januarj'- 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 Avas a series of evening lectures in the audi- 

 torium arranged b}^ the School of Foreign Service of Georgetown 

 University on the " History and nature of international relations," 



