REPORT OF THE SECRETARY 133 
of the secretary, both forming parts of the annual report of the 
Board of Regents to Congress, were issued in pamphlet form in 
December, 1925. 
Report of the executive committee and proceedings of the Board of Regents of 
the Smithsonian Institution for the year ending June 30, 1925. 11 pp. 
(Publ. 2835.) 
Report of the Secretary of the Smithsonian Institution for the year ending 
June 80, 1925. 122 pp. (Publ. 2834.) 
The general appendix to this report, which was in press at the 
close of the year, contains the following papers: 
The spiral nebulz and the structure of space, by Carl Wirtz. 
Immensities of time and space, by A. Vibert Douglas. 
Certain aspects of high-pressure research, by P. W. Bridgman. 
Lightning and other high-voltage phenomena, by F. W. Peek, jr. 
Chemical elements and atoms, by G. Urbain. 
The manufacture of radium, by Camille Matignon. 
The chemistry of solids, by Cecil H. Desch. 
Terrestrial magnetism in the twentieth century, by Daniel L. Hazard. 
Some causes of volcanic activity, by Arthur L. Day. 
Geology in the service of man, by W. W. Watts. 
The yeasts: A chapter in microscopical science, by A. Chaston Chapman. 
Tropical cyclones and the dispersal of life from island to island in the Pacific, 
by Stephen Sargent Visher. 
Isolation with segregation as a factor in organic evolution, by David Starr 
Jordan. 
The biological action of light, by Leonard Hill. 
Animal life at high altitudes, by Maj. R. W. G. Hingston. 
The nest of the Indian tailor bird, by Casey A. Wood. 
The needs of the world as to entomology, by L. O. Howard. 
From an egg to an insect, by R. BH. Snodgrass. 
The role of vertebrates in the control of insect pests, by W. L. McAtse. 
Carnivorous butterflies, by Austin H. Clark. 
The potato of romance and of reality, by W. E. Safford. 
The relation of geography to timber supply, by W. B. Greeley. 
The historical geography of early Japan, by Carl Whiting Bishop. 
The excavations of the sanctuary of Tanit at Carthage, by Byron Khun de 
Prorok. 
The Smithsonian Institution. 
Sir Arehibald Geikie, by Sir Aubrey Strahan. 
Ned Hollister (1876-1924), by Wilfred H. Osgood. 
SPECIAL PUBLICATION 
North American Wild Flowers. Vol. 1. By Mary Vaux Walcott. 1926. 
Quarto, portfolio binding, 80 piates in color, 1 page descriptive text for each. 
(Not for general distribution; issued through subscriptions.) 
PUBLICATIONS OF THE UNITED STATES NATIONAL MUSEUM 
The publications of the National Museum are: (a) The annual 
report, (>) the Proceedings of the United States National Museum, 
