REPORT OF THE SECRETARY 11 7 



VOLUME 73 



No. 2. Opinions Rendered by tlie International Commission on Zoological 

 Nomenclature. Opinions 78 to 81. February 9, 1924. 32 pp. (Publ. 2747.) 



VOLUME 75 



No. 1. Cambrian Geology and Paleontology. V. No. 1. Geological Forma- 

 tions of Beaverfoot-Brisco-Stanford Range, British Columbia, Canada. By 

 Charles D. Walcott. June 28, 1924. Pp. 1-51, pis. 1-8, text figs. 1-11. 

 (Publ. 2756.) 



VOLUME 76 



No. 2. History of Electric Light. By Henry Schroeder. August 15, 1923. 

 95 pp., 97 illus. (Publ. 2717.) 



No. 3. On the Fossil Crinoid Family Catillocrinidae. By Frank Springer. 

 August 3, 1923. 41 pp., 5 pis. (Publ. 2718.) 



No. 4. Report on Cooperative Educational and Research Work Carried on 

 by the Smithsonian Institution and Its Branches. July 28, 1923. 30 pp. 

 (Publ. 2719.) 



No. 5. The Telescoping of the Cetacean Skull. By Gerrit S. Miller, jr. 

 August 31, 1923. 70 pp., 8 pis. (Publ. 2720.) 



No. 6. Descriptions of Nevr East Indian Birds of the Families Turdidae, Syl- 

 viidae, Pycnonotidae, and Muscicapidae. By Harry C. Oberholser. July 16, 

 1923. 9 pp. (Publ. 2721.) 



No. 7. Description of an Apparently New Toothed Cetacean from South 

 Carolina. By Remington Kellogg. July 25, 1923. 7 pp., 2 pis. (Publ. 2723.) 



No. 8. Additional Designs on Prehistoric Pottery. By J. Walter Fewkes, 

 Chief, Bureau of American Ethnology. January 22, 1924. 46 pp., 101 text figs. 

 (Publ. 2748.) 



No. 9. The Brightness of Lunar Eclipses, 1860-1922. By Willard J. Fisher. 

 February 18, 1924. 61 pp. (Publ. 2751.) 



No. 10. Explorations and Field Work of the Smithsonian Institution in 

 1923. March 31, 1924. 128 pp., 123 text figs. (Publ. 2752.) 



SMITHSONI.\N ANNUAL REPORTS 



Report for 1922. — The Annual Keport of the Board of Regents 

 for 1922 was still in press at the close of the fiscal year. The general 

 appendix to this report contains the following articles : 



Who will promote science? by C. G. Abbot. 



Recent discoveries and theories relating to the structure of matter, by Karl 

 Taylor Compton. 



The architecture of atoms and a universe built of atoms, by C. G. Abbot. 

 Aeronautic research, by Joseph S. Ames. 



Photosynthesis and the possible use of solar energy, by H. A. Spoehr. 

 Fogs and clouds, by W. J. Humphreys. 

 Some aspects of the use of the annual rings of trees in climatic study, by 



Prof. A. E. Douglass. 

 The age of the earth, by T. C. Chamberlin and others. 

 How deep is the ocean? by C. G. Abbot. 

 Two decades of genetic progress, by E. M. East. 

 Observations on a Montana beaver canal, by S. StiUman Berry. 

 20397—25 9 



