REPORT OF NATIONAL MUSEUM, 1921. 25 



corner"; Edward Kasner, "A model of the solar gravitational 

 field"; George D. Birkhoff, "On the problem of three or more 

 bodies"; L. E, Dickson, (1) " Quaternions and their generaliza- 

 tions," and (2) "Investigations in algebra and number theory"; 

 H. F. Blichfeldt, " On the approximate solutions in integers of a set 

 of linear equations"; H, N. Russell, "A provisional theory of new 

 stars " ; F, Schlesinger, " The compilation of star catalogues by means 

 of a doublet camera"; Vernon Kellogg, "The Xational Research 

 Council " ; W. S. Adams, " The order of the stars " ; C. G. Abbot, 

 " Cooking with solar heat on Mount Wilson " ; F. W. Clarke, " The 

 evolution of matter"; Albert Einstein, "Relativity"; Austin H. 

 Clark, " The classification of animals " ; L. O. Howard, " Attempts to 

 acclimatize Aphelinus niali in France, South Africa, New Zealand, 

 and Uruguay " ; C. D. Walcott, " Note on structure of the trilobite " ; 

 J, C. Merriam, " Origin and history of the Ursidae or bears in the 

 Western Hemisphere, with particular reference to the bearing of 

 this question on problems of geographical history " ; H. F. Osborn, 

 " The evolution, phylogeny, and classification of the Proboscidae " ; 

 Simon Flexner, " Experiments in epidemiology " ; Graham Lusk, 

 "Effect of administering various simple metabolites upon the heat 

 production of the dog " ; Jacques Loeb, " The physical and chemical 

 behavior of proteins"; Francis G, Benedict, Edward L. Fox, and 

 Marion L. Baker, "The skin temperature of Pachyderms"; L. R. 

 Jones, " The temperature factor in phytopathology " ; T. B. Osborne 

 and L. B. Mendel, " Results of feeding experiments with mixtures 

 of foodstuffs in unusual proportions " ; C. B. Davenport, " Popula- 

 tion"; and E. L. Thorndike, "Measuring higher grades of intelli- 

 gence." The following papers were presented by title only : J. M. 

 Clarke, "Life of James Hall, of Albany, geologist and paleontolo- 

 gist, 1811-1890"; Franz Boas, "The difference between variable 

 series " ; Raymond Pearl and Charmian Howell, "A study of specific 

 forces of mortality." 



The National Research Council used the auditorium on the even- 

 ing of February 21, 1921, for a lecture by Dr. C. H. Herty on funda- 

 mental chemistry, illustrated by a small exhibit displayed in the ad- 

 joining foyer. 



To afford the many men and women throughout the country in- 

 terested in venereal disease control work an opportunity of hearing 

 lectures by leading authorities on the subject, the Bureau of Public 

 Health Service, Treasury Department, conducted an Institute on 

 Venereal Disease Control in the auditorium and committee rooms, 

 from November 22 to December 4, including motion-picture demon- 

 strations on the evenings of November 26 and 29 and December 1, 

 and a meeting of the American Association of Women in Public 

 Health on the evening of November 24. Rooms 45 and 46 and the 



