REPORT OF THE SECRETARY 93 



No. 7. The gold-banded skipper (Rhahdoides cellus), by Austin H. Clark. 

 50 pp., 8 pis., 4 figs. (Publ. 33S6.) May 6, 1936. 



No. 8. Thomas Walter, botanist, by William R. Maxou. 6 pp. (Publ. 3388.) 

 April 22, 1936. 



No. 9. Preliminary observations on growth and phototropic response of oat 

 seedlings, by Enoch Karrer. 4 pp., 1 fig. (Publ. 3389.) June 2, 1936. 



No. 10. Additional information on the Folsom complex : Report on the second 

 season's investigations at the Lindenmeier site in northern Colorado, by Frank 

 H. H. Roberts, Jr. 38 pp., 12 pis., 5 figs. (Publ. 3390.) June 20, 1936. 



No. 11. Influence of planetary configurations upon the frequency of visible sun 

 spots, by Fernando Sanford. 5 pp. (Publ. 3391.) June 5, 1936. 



No. 12. The dependence of terrestrial temperatures on the variations of the 

 sun's radiation, by C. G. Abbot. 15 pp., 7 figs. (Publ. 3392.) May 23, 1936. 



SMITHSONIAN ANNUAL REPORTS 



Report for 1931^. — The complete volume of the Annual Keport of 

 the Board of Regents for 1934 was received from the Public Printer 

 in October 1935. 



Annual Report of the Board of Regents of the Smithsonian Institution show- 

 ing operations, expenditures, and condition of the Institution for the year end- 

 ing June 30, 1934. xiv+448 pp., 73 pis., 45 text figs. (Publ. 3305.) 



The appendix contained the following papers : 



The new world-picture of modern physics, by Sir James H. Jeans. 



The markings and rotation of Mercury, by E. M. Antoniadi. 



British Polar Year Expedition to Fort Rae, Northwest Canada, 1932-33, by 

 J. M. Stagg. 



Protium-deuterium-tritium, the hydrogen trio, by Hugh S. Taylor. 



Some chemical aspects of life, by Sir Frederick Gowland Hopkins. 



Commercial extraction of bromine from sea water, by Leroy C. Stewart. 



Before papyrus — beyond rayon, by Gustavus J. Esselen. 



The variety in tides, by H. A. Marnier. 



Modern seismology, by F. J. Scrase. 



A generation's progress in the study of evolution, by Edwin G. Conklin. 



How the fishes learned to swim, by Anatol Heintz. 



Curious and beautiful birds of Ceylon, by Casey A. Wood. 



The influence of civilzation on the insect fauna in cultivated areas of North 

 America, by Roger C. Smith. 



Arctic butterflies, by Austin H. Clark. 



Grasses, what they are and where they live, by A. S. Hitchcock. 



Phototropism : A specific growth response to light, by Earl S. Johnston. 



An outline development of highway travel, espeuially in America, by Carl 

 W. Mitman. 



Yia Appia in the days when all roads led to Rome, by Albert C. Rose. 



Smithsonian archeological projects conducted under the Federal Emergency 

 Relief Administration, 1933-34, by M. W. Stirling. 



Indian cultures of northeastern South America, by Herbert W. Krieger. 



Commerce, trade, and monetary units of the Maya, by Frans Blom. 



Report for 1935. — The report of the Secretary, which included the 

 financial report of the executive committee of the Board of Regents, 



