136 ANNUAL REPORT SMITHSONIAN INSTITUTION, 19 2 8 



The Ijoess of China, by George B. Barbour. 



A Visit to the Gem Districts of Ceylon and Burma, by Frank D. Adams. 



The History of r)rg:inic Elvolutioii, by John M. Coulter. 



Barro Colorado Island Biological Station, by Alfred O. Gross. 



Geography and Evolution in the Pocket Gopliers of California, by Joseph 

 Grinnell. 



How Beavers Build Their Houses, by Venion Bailey. 



The Mosquito-Fish (Gambusia), and Its Relation to ^Malaria, by David Starr 

 Jordan. 



The Effect of Aluminum Sulphate on Rhododendrons and Other Acid-Soil 

 Plants, by Frederick V. Coville. 



Eastern Brazil through an Agrostologist's Spectacles, by Agnes Chase. 



Our Heritage from the American Indians, by W. E. Safford. 



The Parasite Element of Natural Control of Injurious Insects and Its Contml 

 by Man, by I^. O. Howard. 



Fragrant Butterflies, by Austin H. Clark. 



The Ritual Bullfight, by C. W. Bishop. 



The Bronzes of Hsin-Cheng Hsien, by C. W. Bishop. 



The Katcina Altars in Hopi Worship, by J. Walter Fewkes. 



Omaha Bow and Ari-ow-Makers, by Francis La Fle.sche. 



The National Park of Switzerland, by G Edith Bland. 



Samuel Slater and the Oldest Cotton Machinery in America, by Frederick L. 

 Lewton. 



Preventive Medicine, by Mark F. Boyd. 



William Bateson, by T. H. Morgan. 



H. Kamerlingh Oimes, by F. A. Freeth. 



Report for 1927. — The report of the executive committee and pro- 

 ceedings of the Board of Regents of the Institution, and the report 

 of the acting secretary, both forming parts of the annual report 

 of the Board of Regents to Congress, -were issued in December, 1927. 



Report of the Executive Committee and Proceedings of the Board of Regents 

 of the Smithsonian Institution for the Year Ending June 30, 1927. 12 pp. 

 (Publ. 2924.) 



Report of the Acting Secretary of the Smithsonian Institution for the Year 

 Ending June 30, 1927. 131 pp. (Publ. 2923.) 



The general appendix to this report, which was in press at the 

 close of the year, contains the follovring p:ipers: 



The Accomplishments of Modern Astronomy, by C. G. Abbot. 



Recent Developments of Cosmical Physics, by J. H. Jeans. 



The Evolution of Twentieth-Century Physics, by Robert A. Millikan. 



Isaac Newton, by Prof. Albert Einstein. 



The Nucleus of the Atom, by J. A. Crowther. 



The Centenary of Augustin Fresnel, by E. -M. Antoniadi. 



Soaring Flight, by Wolfgang Klemi>erer. 



The Coming of the New Coal Age, by Edwin E. Slosson. 



Is the Earth Growing Old? By Josef Felix Pompeckj. 



Geological Climates, by W. B. Scott. 



Geologic Romance of the Finger Lakes, by Prof. Herman F. Fairchild. 



Fossil Marine Faunas as Indicators of Climatic Conditions, by Edwin Kirk. 



Paleontology and Human Relations, by Stuart Weller. 



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