REPORT OF THE SECRETARY. 13 



tion, 414 reports of the American Historical Association, and 345 

 publications presented to but not issued by the Smithsonian In- 

 stitution. 



The publications of the Institution and its branches are the prin- 

 cipal means of carrying out one of its chief purposes, the " diffusion 

 of knowledge." They cover practically every branch of science and 

 are distributed to libraries, educational and scientific establishments, 

 and interested individuals throughout the world. The annual report 

 of the Institution contains a general appendix made up of articles 

 reviewing in a semipopular style recent advances and interesting de- 

 velopments in all branches of science. These reports are printed in 

 large editions, and the increasing demand for them indicates that 

 there is a growing interest in scientific matters among the American 

 people. The publications of the National Museum and the Bureau 

 of American Ethnology are described in detail in the appendices 

 devoted to those branches of the Institution. 



Seven papers of the Smithsonian Miscellaneous Collections were 

 issued during the year, among which may be mentioned as of special 

 interest a seventh revised edition of the Smithsonian Physical Tables, 

 a comprehensive work for which there is great demand among indus- 

 trial concerns, engineers, and educational institutions; the annual 

 Smithsonian Exploration Pamphlet, which describes briefly the re- 

 sults of the Institution's explorations and field-work during the year 

 and is profusely illustrated with interesting photographs taken by 

 the explorers in various parts of the world; and a reprint of the 

 Smithsonian Mathematical Tables, one of the Institution's series of 

 tables which includes the Physical Tables mentioned above, the 

 Meteorological Tables, and the Geographical Tables. 



Allotments for printing. — The congressional allotments for the 

 printing of the Smithsonian reports and the various publications of 

 the branches of the Institution were practically used up at the close of 

 the year. The allotments for the coming year ending June 30, 1922, 

 are as follows: 



For the Smithsonian Institution : For printing and binding the annual 

 reports qf the Board of Regents, with general appendices, the 

 editions of which shall not exceed 10,000 copies, to be immediately 

 available $20, 000 



For the annual reports of the National Museum, with general appen- 

 dices, and for printing labels and blanks, and for the bulletins and 

 proceedings of the National Museum, the editions of which shall not 

 exceed 4,000 copies, and binding in half morocco or material not 

 more expensive, scientific books and pamphlets presented to or ac- 

 quired by the National Museum Library 37, 500 



For the annual reports and bulletins of the Bureau of American 

 Ethnology, and for miscellaneous printing and binding for the bureau- 21, 000 



For the annual report of the National Gallery of Art and for printing 

 catalogues, labels, and blanks 1,000 



