REPORT OF THE SECRETARY 11 



locating the probable route of De Sotoi and Moscoso through Arkan- 

 sas and Louisiana. He also recorded linguistic material among the 

 Tunica Indians in Louisiana and continued the preparation of the 

 handbook of the Southeastern Indians. Doctor Michelson conducted 

 linguistic and other researches among the Cheyenne, the Fox, and 

 the Kiowa. Mr. Harrington studied the Indians of Monterey and 

 San Benito Counties, Calif., and investigated the Chingichngich cul- 

 ture of the coast of southern California. Doctor Roberts continued 

 excavations near Allantown, Ariz., uncovering a number of pit 

 houses, one of which, dated 797 A. D. by means of charred timbers, 

 proved to be one of the earliest buildings of known date in the South- 

 west. Doctor Strong conducted excavations in the stratified deposits 

 on the top of Signal Butte, in western Nebraska, revealing three 

 distinct levels of occupatioji, the lowest evidently of great antiquity. 

 Mr. Hewitt continued his researches on the Iroquois Indians of the 

 United States and Canada. Mr. Walker explored certain caves in 

 the Ozark region of north central Arkansas and mound and village 

 sites in northern Louisiana. Miss Densmore continued her researches 

 on Indian music, particularly among the Winnebago of Wisconsin 

 and the Seminole of Florida. 



International Exchanges. — The International Exchange Service is 

 the official United States agency for the exchange with other coun- 

 tries of parliamentary documents, departmental documents, and mis- 

 cellaneous scientific and literary publications. The total number of 

 packages of such material handled by the service during the year was 

 759,035, an increase of about 18 per cent over last year's total. The 

 total number of sets of United States official documents forwarded 

 to foreign depositories is 112, and the number of copies of the Con- 

 gressional Record sent to designated agencies abroad is 104. 



National Zoological Park. — An expedition to British Guiana, led 

 by the director of the park, brought back 317 live animals, includ- 

 ing 13 species of mammals, 25 of birds, and 31 of reptiles and 

 amphibians. Other accessions for the year totaled 900 animals. 

 There were removed by death, exchange, and return of animals on 

 deposit a total of 1,416, leaving the collection at the close of the year 

 at 2,302 animals. Outstanding among the gifts of the year were 

 the baby mountain gorilla and chimpanzee brought by Mr. and Mrs. 

 Martin Johnson. Visitors totaled 2,169,460, including 716 groups 

 from schools and other organizations in 22 States, the District of 

 Columbia, and Cuba. Work has progressed on the plans for a 

 building for small mammals and great apes. The newly completed 

 reptile house continues to be the most popular building at the park, 

 demonstrating that it is well worth while to exhibit animals in suit- 

 able and attractive quarters. 



