120 ANNUAL REPOBT SMITHSONIAN INSTITUTION, 1922. 



No. 11. The Echinodernis as Aberrant Arthropods. By Austin H. Clark. July 



20, 1921. 20 pp., 24 figs. (Publ. 2653.) 

 No. 12. A Study of the Body Temperature of Birds. By Alexander Wetuiore. 



December 30, 1921. .52 pp. (Publ. 2658.) 

 No. 13. The Melikeron, an Approximately Black-Body Pyranometer. By L. B. 



Aldrich. January 25, 1922. 11 pp., 5 figs. (Publ. 2662.) 

 No. 14. A New Sauropod Dinosaur from Ojo Alamo Formation of New Mexico. 



By Charles W. Gilmore. January 31, 1922. 9 pp., 2 pis. (Publ. 2663.) 

 No. 15. Explorations and Field Work of the Smithsonian Institution in 1921.. 



May 26, 1922. 128 pp., 132 figs. (Publ. 2669.) 



VOLUME 73. 



No. 1. Opinions Rendered by tlie International Comniission on Zoological 

 Nomenclature. Opinions 68 to 77. January 31, 1922. 73 pp. (Publ. 2657.) 



SMITHSONIAN ANNUAL REPORTS. 



REPORT FOR 1919. 



The complete volume of the Annual Report of the Board of 

 Keg-ents for 1919, together with the pamphlet copies of the papers 

 in the general appendix, was received from the printer during the 

 year. 

 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. 1919. xii+557 pp., 135 pis.. 24 text figs. (Publ. 



2590.) 



The appendix contained the following papers: 



Modern theories of the spiral nebulre, by Heber D. Curtis. 



A determination of the deflection of light by the sun's gravitational field, from 



observations made at the total eclipse of May 29, 1919, by Sir F. W. Dyson, 



A. S. Eddington, and C. Davidson. 

 Wireless telephony, by N. H. Slaughter. 

 Radium and the electron, by Sir Ernest Rutherford. 



The " HD-4." A 70-miler with remarkable possibilities developed at Dr. Gra- 

 ham Bell's laboratories on the Bras d'Or Lakes, by William Washburn 



Nutting. 

 Natural resources in their relation to military supplies, by Arthur D. Little. 

 Glass and some of its problems, by Sir Herbert Jackson. 

 Tiie functions and ideals of a national geological survey, by F. L. Ransome. 

 The influence of cold in stimulating the growth of plants, by Frederick V. 



Coville. 

 Floral aspects of British Guinea, by A. S. Hitchcock. 

 Milpa agriculture, a primitive tropical system, by O. F. Cook. 

 On the extinction of the mammoth, by H. Neuville. 

 A preliminary study of the relation between geographical distribution and 



migration, with special reference to the Palaearctic region, by R. Meinertz- 



hagen. 

 The necessity of State action for the protection of wild birds, by Walter E. 



Collinge. 

 Glimpses of desert bird life in the Great Basin, by Harry C. Oberholser. 

 The Division of Insects in the United States National Museum, by J. M. 



Aldrich. 



