REPOET OF THE SECRETARY 119 



A study of the flight of sea gulls, hy R. C. Miller. 



Insect musicians and their instruments, by R. E. Snodgrass. 



The gardens of ancient Mexico, by Mrs. Zelia Nuttall. 



The Hovenweep National Monument, by J. Walter Fewkes. 



The origin and antiquity of the American Indian, by A. Hrdlicka. 



Ruined cities of Palestine, east and west of the Jordan, by Arthur W. Sutton. 



The anthropological work of Prince Albert 1st of Monaco and recent progress 



in human paleontology in France, by Marcellin Boule. 

 The utilization of volcanic steam in Italy. 

 Proposed tidal hydroelectric power development of the Petitcodiac and Mem 



ramcook Rivers, by W. Rupert Turnbull. 

 Sir James Dewar, by Sir James Crichton-Browne. 

 J. C. Kapteyn, by A. Van Maanen. 

 Julius Von Hann, by C. G. Simpson. 



Bejyort for 192Jf. — The report of the executive committee and pro- 

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

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

 Board of Regents to Congress, were issued in pamphlet form in De- 

 cember, 1924. 



Report of the executive committee and proceedings of the Board of Regents of 

 The Smithsonian Institution for the year ending June 30, 1024. 14 pp. (Publ. 

 2792.) 



Report of the Secretary of the Smithsonian Institution for the year ending 

 June 30, 1924. 124 pp. (Publ. 2791.) 



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

 close of the year, contains the following papers : 



The origin of the solar system, by J. H. Jeans. 



The electrical structure of matter, by Prof. Sir Ernest Rutherford. 



The physicist's present conception of an atom, by R. S. Millikan. 



The vacuum — there's sometliing in it, by W. R. Whitney. 



The use of radium in medicine, by Antoine B<*cl^re. 



Clear fused quartz made in the electric furnace, by Edward R. Berry. 



The drifting of the continents, by Pierre Termier. 



The probable solution of the climatic problem in geology, by William Ramsay. 



A modern managerie ; more about the National Zoological Park, by N. HoUister. 



Nests and nesting habits of the American eagle, by Francis H. Herrick. 



The breeding places of the eel, by Jobs. Schmidt. 



Cankerworms, by R. E. Snodgrass. 



A botanical trip to Ecuador, Peru, and Bolivia, by A. S. Hitchcock. 



Orchid collecting in Central America, by Paul C. Standley. 



Sketches from the notebook of a naturalist-traveler in Oceania during the year 



1923, by Casey A. Wood. 

 Historical tradition and oriental research, by James Henry Breasted. 

 Shamanism of the natives of Siberia, by I. M. Casanowicz. 

 Egypt as a field for anthropological research, by Prof. P. E. Newberry. 

 North American Indian dwellings, by T. T. Waterman. 

 The nature of language, by R. L. Jones. 

 John Mix Stanley, artist-explorer, By David I. Busbnell. 

 Herluf Winge, by Th. Mortensen. 



