REPORT OE THE SECRETARY. 19 



dians, the Iroquois, various members of the Muskhogean stock, 

 Kiowa, Pueblo, Osage, Pawnee, and others. Archeological explora- 

 tions were conducted in Texas, Missouri, Tennessee, Kentucky, Colo- 

 rado, New Mexico, and the Hawaiian Islands. 



Successful archeological field-work was accomplished by Dr. J. 

 Walter Fewkes on the Mesa Verde National Park, Colo. An ex- 

 tremely interesting ruin on which work was begun during the pre- 

 vious year was completely excavated and repaired. Owing to its 

 undoubted use in connection with the worship of fire by the Indians, 

 it was named Fire Temple. In Tennessee a number of prehistoric 

 mounds were excavated which yielded interesting and valuable data 

 on the Indians of that region, and similar work was conducted in 

 Texas under the auspices of the bureau. Researches on Indian music 

 were continued by Miss Densmore, the music of the Papago being 

 studied this year. 



INTERNATIONAL EXCHANGES. 



The work of the exchange service was greatly increased during the 

 past year owing to the resumption of exchange relations with Ger- 

 many. The total number of packages of publications handled during 

 the year was 451,471, an increase of 82,099 over the total for the pre- 

 ceding year. The weight of this material was 605,312 pounds, an 

 increase of 108,934 pounds. 



During the year exchanges of publications were inaugurated with 

 the Czechoslovak Republic and with the Polish Government. Ex- 

 change relations will be established with Roumania and Jugoslavia 

 as soon as transportation and other facilities are sufficiently stabilized. 



To the list of countries receiving full sets of United States Gov- 

 ernment documents there was added the Government of Poland, mak- 

 ing a total of 57 foreign depositories, while to the list receiving par- 

 tial sets were added Latvia and the Library of the League of Nations 

 at Geneva, bringing the total number of partial sets up to 39. 



As an example of the value of the exchange service in securing 

 special series of publications in this country for establishments 

 abroad, a set of publications which would tend to make the United 

 States better known in Belgium was obtained from the various Gov- 

 ernment bureaus in this country and forwarded to the Societe Beige 

 d'Etudes et d'Expansion, at Liege, at their request. 



NATIONAL ZOOLOGICAL PARK. 



That the National Zoological Park is becoming more and more 

 valuable to the people of Washington and out-of-town visitors from 

 all parts of the country as a source of recreation and natural history 



