SECRETARY’S REPORT 61 
documents in the Colombian capital dealing with demographic move- 
ments on the west coast of South America in colonial times, and to 
consult with Dr. Crist on Institute of Social Anthropology matters. 
In June 1949 he served as Adviser to the American Delegation at the 
Third Annual Interamerican Indian Congress, held in Cuzco. 
Publications.—Institute of Social Anthropology Publications Nos. 
8 and 9 appeared during the year and Nos. 10, 11, and 12 were in 
press. These are listed with the publications of the Bureau of Ameri- 
can Ethnology. 
RIVER BASIN SURVEYS 
The River Basin Surveys, organized in 1946 as a unit of the Bureau 
of American Ethnology to carry into effect a memorandum of under- 
standing between the Smithsonian Institution and the National 
Park Service providing for the salvage of archeological and paleon- 
tological materials that will be lost as a result of the nation-wide 
program for flood control, irrigation, hydroelectric, and navigation 
projects sponsored by the Federal Government, continued its opera- 
tions during the year. As in the past, the investigations were con- 
ducted in cooperation with the National Park Service and the Bureau 
of Reclamation of the Department of the Interior, the Corps of 
Engineers, Department of the Army, and a number of nongovern- 
mental local institutions. The work was financed by the transfer of 
$145,400 ($20,000 of which was appropriated in the 2d Deficiency 
Act and did not become available for actual use until the beginning 
of fiscal 1950) to the Smithsonian Institution by the National Park 
Service. The money comprising these funds was derived in part 
from the Bureau of Reclamation and in part from the National Park 
Service. 
Activities in the field consisted mainly of reconnaissance or surveys 
for the purpose of locating sites that will be involved in construction 
work or are so situated that eventually they will be inundated. There 
was a limited testing of sites to determine their nature and extent, 
where such was deemed essential, and at seven locations extended 
excavation or intensive testing was carried on. The surveys covered 
67 reservoir areas scattered throughout 8 river basins and 14 States. 
At the end of the year the total of the reservoir areas surveyed or 
where some digging has been done since the start of the program in 
July 1946 had reached 154 located in 21 States. During the course 
of the work 2,107 archeological sites have been recorded, and of that 
number 456 have been recommended for excavation or further testing. 
Thus far preliminary appraisal reports have been finished for all the 
reservoirs, and 97 have been mimeographed for distribution to the 
cooperating agencies. Where several reservoirs form a unit in a single 
