18 ANNUAL REPORT SMITHSONIAN INSTITUTION, 1919. 
and the Kiowa. The bearings of this discovery on theories of the 
origin of modern Pueblos is very significant. 
Special research work was done among the Salish Tribes, the Paw- 
nee, and Chippewa. Dr. Walter Hough, curator of ethnology, 
United States National Museum, undertook archeological work in the 
White Mountain Apache Reserve, Arizona, and Mr. Neil M. Judd, 
curator of American archeology, United States National Museum, suc- 
cessfully investigated five prehistoric ruins in the Cottonwood Can- 
yon caves. Dr. AleS Hrdlitka, curator of physical anthropology, 
United States National Museum, was detailed to make an examina- 
tion of the remains of southwestern Florida, especially of the shell 
heaps along the coast south of Key Marco. Mr. Gerard Fowke has 
made careful detailed study of the numerous caves in the Ozark 
region of central Missouri, and also transmitted a valuable collection 
of relics to the Museum. 
The number of publications distributed was 11,483, an increase of 
4,189 over the number sent out last year. The library accessioned 
380 new books and 210 pamphlets. 
INTERNATIONAL EXCHANGES. 
The total number of packages handled by the International Ex- 
change Service during the year was 270,860, an increase over the 
number for the previous year of 3,914.. Although it has not yet been 
possible to put the service on a prewar basis as far as the shipment of 
consignments abroad is concerned, shipments in boxes are being made 
as frequently as present conditions will permit to all countries except 
Austria, Bulgaria, Germany, Hungary, Montenegro, Roumania, 
Russia, Serbia, and Turkey. 
The exchange service has continued its policy of international 
helpfulness in procuring publications desired by governmental and 
scientific establishments both abroad and at home. As an instance of 
this service, sets as nearly complete as possible of posters relating to 
the war were assembled and transmitted to the British Museum at 
their request, a similar service having been rendered to the French 
Government the previous year. Owing to the excessive charges on 
ocean freight, many packages were sent by mail. 
Late in the fiscal year shipments to Belgium and the northern 
neutrals were resumed. ‘The chief of the Belgian Service of Inter- 
national Exchanges said, in part, in a letter to the office here: 
I should fail most lamentably in my duty, Mr. Secretary, if I did not add to 
this reply warm thanks in the name of the Belgian Government, in the name of 
our scientific establishments and institutions, and in my own name, for the ex- 
treme kindness you have shown us in reserving for us until the present time all 
the numerous “series” and “collections” (one and all of inestimable value) 
which the war has prevented you from transmitting to us at the proper time. 
