20 REPORT OF thp: secretary. 



including- ^8 papers, with 103 plates and 45 text tigures, as enumerated 

 by the editor in the appendix to this report. 



To the regular series of Miscellaneous Collections the following 

 papers have been added: 



The Literature of Thorium, by Dr. Cavalier H. Joiiet; Ph^logeu}' of 

 Fusus and its Allies, by Prof. A. W. (ri-abau; Researches on the 

 Attainment of Very Low Temperatures, ))y Prof. Morris W. Travers, 

 and a Select Bibliography of Chemistry (Second Supplement), b}^ Dr. 

 H. C. Bolton.^' 



There was in press at the close of the year a Catalogue of Diptera, 

 by Prof. J. M. Aldrich, and Researches in Helminthology and Parasit- 

 ology, by Dr. Joseph Leidy. 



The Smithsonian Report is printed as a Congressional document and 

 is its only publication of which the edition is large enough to permit 

 even a limited distribution to individuals. In the general appendix to 

 the report it has been my esi)ecial aim to include, as heretofore, papers 

 of scientitic importance, treated in a wa>" to l)e understood by the lay 

 student. The Report for 1903 has been put in type, but had not been 

 delivered by the pi'inter at the close of the Hscal year. The volume 

 contains the Secretary's report to the Regents for the year ending 

 June 30, 1903, the proceedings of the Regents' meeting of January 28, 

 1903, and the repoj't of the Executive Committee dated elanuary 25, 

 190-1, besides the general appendix of about 50 papers on scientitic 

 subjects relating chiefly to the calendar 3'ear 1903. 



Among the many manuscripts left unfinished by the late Dr. G. 

 Brown (ioode, there is a group of chapters dealing with the progress 

 of science in America. In accordance with the author's liberal inter- 

 pretation of the meaning of science, the work does not confine itself 

 to the physical and natural sciences, but contains notes on anthropology, 

 philology, l)i])liography, and kindred subjects. As Doctor Goode was 

 eminently the historian of American science, it seems especially fitting 

 that the Smithsonian Institution should undertake the publication of 

 these memoirs, even if incomplete. The maiuiscript is now being 

 worked over and I hope that in the near future these notes will in 

 book form serve as a foundation for and a stimulus to further work in 

 the same direction. 



LIBRARY. 



The accessions to the Smithsonian dejwsit in the Library of Con 

 gress during the year aggregated '2,286 volumes, 21,467 parts of vol- 

 umes and pamphlets, and 215 charts, making a total of 23,968 cata- 

 logue entries, equivalent to nearly 15,000 octavo volumes. Additions 



'''Dr. Henry Carrington Bolton died on November 19, li)03, before the publication 

 of this work. 



