REPORT OF THE SECRETARY 65 



No. 12. A spectrophotometric development for biological and photochemical 

 investigations, by F. S. Brackett and K. D. McAlister. 7 pp., 3 pis., 5 text figs. 

 (Publ. 3176.) September 2G, 1932. 



No. 13. The functions of radiation in the physiology of plants. I. General 

 methods and apparatus, by F. S. Brackett and Earl S. Johnston. 10 pp., 1 pi., 

 3 text figs. (Publ. 3179.) November 14, 1932. 



No. 14. The functions of radiation in the physiology of plants. II. Some 

 effects of near infrared radiation on plants, by Earl S. Johnston. 15 pp., 4 pis., 

 2 te.xt figs. (Publ. 3180.) November 15, 1932. 



No. 15. An improved water-flow pyrheliometer and the standard scale of solar 

 radiation, by C. G. Abbot and L. B. Aldrich. 8 pp., 1 pi. (Publ. 3182.) No- 

 vember 11, 1932. 



No. IG. Carbon dioxide assimilation in a higher plant, by W. H. Hoover 

 Earl S. Johnston, and F. S. Brackett. 19 pp., 2 pis., 8 text figs. (Publ. 318G.) 

 January 16, 1933. 



No. 17. Absolute intensities in the visible and ultraviolet spectrum of a quartz 

 mercury arc, by E. D. McAlister. 18 pp., 4 text figs. (Publ. 3187.) January 

 16, 1933. 



VOLUME 89 



No. 1. Amphibians and reptiles collected by the Smithsonian Biological 

 Survey of the Panama Canal Zone, by Karl Patterson Schmidt. 20 pp. (Publ. 

 3181.) March 16, 1933. 



No. 2. The latitude shift of the storm track in the 11-year solar period. Storm 

 frequency maps of the United States, 1883-1930, by C. J. Kullmer. 34 pp., 6 

 figs., 49 maps. (Publ. 3188.) March 3, 1933. 



No. 3. The kampometer, a new instrument of extreme sensitiveness for meas- 

 uring radiation, by C. G. Abbot. 5 pp., 1 fig. (Publ. 3211.) February 8, 1933. 



No. 4. Scouting for a site for a solar-radiation station, by A. F. Moore. 23 

 pp., 4 pis., 9 text figs. (Publ. 3212.) April 4, 1933. 



No. 5. Forecasts of solar radiation, by C. G. Abbot. 5 pp., 2 text figs. (Publ. 

 3214.) March 27, 1933. 



SMITHSONIAN ANNUAL REPORT 



Report jor 1931. — The complete volume of the Annual Report of 

 the Board of Regents for 1931 was received from the Public Printer 

 in October 1932. 



Annual Report of the Board of Regents of the Smithsonian Institution showing 

 operations, expenditures, and condition of the Institution for the year ending 

 June 30, 1931. xiii-|-592 pp., 87 pis., 94 text figs. (Publ. 3142.) 



The appendix contained the following papers: 



Twenty-five years' study of solar radiation, by C. G. Abbot. 



The composition of the sun, by Henry Norris Russell. 



Sun spots and radio reception, by Harlan T. Stetson. 



An evolving universe, by Sir James Jeans. 



The rotation of the galaxy, by A. S. Eddington. 



Stellar laboratories, by Theodore Dunham, Jr. 



Present status of theory and experiment as to atomic disintegration and atomic 



synthesis, by Robert A. Millikan. 

 Assault on atoms, by Arthur H. Compton. 

 Two-way television, by Herbert E. Ives. 



