86 ANNUAL REPORT SMITHSONIAN INSTITUTION, 1932 



No. 6. Composition of the Caddoau linguistic stocli, by Alexander Lesser and 

 Gene Weltfish. 15 pp. (Piibl. 3141.) May 14, 1932. 



No. 8. Graphic correlation of radiation and biological data, by F. S. Brackett. 

 7 pp. (Publ. 3170.) May 17, 1932. 



No. 9. Periodicity in solar variation, by C. G. Abbot and Gladys T. Bond. 

 14 pp., 2 pis., 8 text figs. (Publ. 3172.) May 24, 1932. 



SMITHSONIAN ANNUAL REPOKT 



Report for 1930. — The complete volume of the Annual Report of 

 the Board of Regents for 1930 was received from the Public Printer 

 in December, 1931. 



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

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

 ending June 30, 1930. xii+650 pp., 191 pis., 57 text figs. (Publ. 3077.) 



The appendix contained the following papers : 



Beyond the red in the spectrum, by H. D. Babcock. 



Growth in our knowledge of the sun, by Charles B. St. John. 



The modern sun cult, by J. W. Sturmer. 



The moon and radioactivity, by V. S. Forbes. 



Modern concepts in physics and their relation to chemistry, by Irving 

 Langmuir. 



Waves and corpuscles in modern physics, by Louis de Bi'oglio. 



New researches on the effect of light waves on the growth of plants, by F. S. 

 Brackett and Earl S. Johnston. 



The Autogiro: Its characteristics and accomplishments, by Harold F. Pitcairn. 



Ten years' gliding and soaring in Germany, by Prof. Dr. Walter Georgii. 



The first rains and their geological significance, by Assar Hadding. 



Weather and glaciation, by Chester A. Reeds. 



Wild life protection : An urgent problem, by Ernest P. Walker. 



The nesting habits of Wagler's Oropendola on Barro Colorado Island, by 

 Frank M. Chapman. 



The rise of applied entomology in the United States, by L. O. Howard. 



Man and insects, by L. O. Howard. 



The use of fish poisons in South America, by Ellsworth P. Killip and Albert C. 

 Smith. 



A rare parasitic food plant of the Southwest, by Frank A. Thackery and 

 M. French Gilman. 



The mechanism of organic evolution, by Charles B. Davenport. 



Extra chromosomes, a source of variations in the Jimson Weed, by Albert F. 

 Blakcslee. 



The age of the human race in the light of geology, by Stephen Richarz. 



Elements of the culture of the circunipolar zone, by W. G. Bogoras. 



The Tell en-Nasbeh Excavations of 1929— a preliminary report, by William 

 Frederic Bad6. 



Recent progress in the field of Old World prehistory, by George Grant Mac- 

 Curdy. 



Ancient seating furniture in the collections of the United States National 

 Museum, by Walter Hough. 



Aspects of aboriginal decorative art in America based on specimens in the 

 United States National Museum, by Herbert W. Krieger. 



