•ADVERTISEMEXT The work of the Bureau of American Ethnology is conducted under act of Con- gress "for continuing ethnologie researches among the American Indians under the direction of the Smithsonian Institution." Two series of publications are issued by the Bureau under authority of Congress, viz, annual reports and bulletins. The annual reports are authorized by concurrent resolution from time to tinie and are published for the use of Congress and the Bureau; the publication of the series of bulletins was authorized by concurrent resolution first in 1886 and more definitely in 1888, and these also are issued for the use of Congress and the Bureau. In addition, the Bureau supervises the publication of a series of quarto volumes bearing the title, "Contributions to Nortli American Ethnology," begun in 1877 by the United States Geographical Survey of the Rocky Mountain Region. These publications are distributed primarily by Congress, and the portions of the editions printed for the Bureau are used for exchange with libraries and scientific and educational institutions and with special investigators in anthropology who send their own publications regularly to the Bureau. The exchange list of the Bureau is large, and the product of the exchange forms a valuable ethnologie library independent of the general library of the Smithsonian Institution. This library is in constant use by the Bureau collaborators, as well as by other anthropologists resident in or visiting Washington. The earli3r volumes of the annual reports and the first seven volumes of the Con- tributions to North American Ethnology" are out of print. The eighth volume of the latter series has not yet been published. Exchanges and other contributions to the Bureau should be addressed, The DIRECTOR, Bureau of American Ethnology, Washington, D. G., XJ. s. A.