128 ANNUAL REPORT SMITHSONIAN INSTITUTION, 19 39 



No. 14. Two new gobioid fishes collected on the Presidential Cruise of 1938, 

 by Isaac Giusburg. 5 pp., 2 figs. (Publ. 3539.) May 31, 1939. 



No. 15. Sponges collected on the Presidential Cruise of 1938, by M. W. de 

 Laubenfels. 7 pp., 1 fig. (Publ. 3540.) June 21, 1939. 



No. 16. A new dicrocoeliid trematode collected on the Presidential Cruise 

 of 1938, by Allen Mcintosh. 2 pp., 1 fig. (Publ. 3541.) June 9, 1939. 



No. 17. Polyclad worms collected on the Presidential Cruise of 1938, by 

 Libbie H. Hyman. 9 pp., 15 figs. (Publ. 3542.) June 17, 1939. 



SMITHSONIAN ANNUAL REPORTS 



Report for 1937. — The complete volume of the Amiual Report of 

 the Board of Regents for 1937 was received from the Public Printer in 

 August 1938. 



Annual Report of the Board of Regents of the Smithsonian Institution show- 

 ing the operations, expenditures, and condition of the Institution for the 

 year ending June 30, 1937. xv+580 pp., 134 pis., 47 figs. (Publ. 3451.) 



The appendix contained the following papers : 



Constitution of the stars, by Sir Arthur Stanley Eddington. 



Discoveries from solar eclipses, by S. A. Mitchell. 



Changes in the length of the day, by Ernest W. Brown. 



The thunderstorm, by E. A. Evans and K. B. McEachron. 



The electron : Its intellectual and social significance, by Karl T. Compton. 



Photography by polarized light, by J. W. McFarlane. 



Measuring geologic time : Its difficulties, by A. C. Lane. 



The earth's interior, its nature and composition, by Leason H. Adams. 



Origin of the Great Lakes basins, by Francis P. Shepard. 



The biography of an ancient American lake, by Wilmot H. Bradley. 



Our water supply, by Oscar E. Meinzer. 



The first crossing of Antarctica, by Lincoln Ellsworth. 



Moving photomicrography, by W. N. Kazeeff. 



Fresh-water fishes and West Indian zoogeography, by George S. Myers. 



The breeding habits of salmon and trout, by Leonard P. Schultz. 



"What is entomology? by Lee A. Strong. 



Maize — our heritage from the Indian, by J. H. Kempton. 



The emergence of modern medicine from ancient folkways, by Walter 



C. Alvarez. 

 National and international standards for medicines, by E. Fullerton Cook. 

 The healing properties of allantoin and urea discovered through the use 



of maggots in human wounds, by William Robinson. 

 The aims of the Public Health Service, by Thomas Parran. 

 Excavations at Chanhu-daro by the American School of Indie and Iranian 



Studies and the Museum of Fine Arts, Boston : Season 1935-36, by Ernest 



Mackay. 

 Ras Shamra : Canaanite civilization and language, by Zellig S. Harris. 

 Blood-groups and race, by J. Millot. 

 Early Chinese cultures and their development : A new working-hypothesis, 



by Wolfram Eberhard. 

 Origin and early diffusion of the traction plow, by Carl Whiting Bishop. 

 Historical notes on the cotton gin, by F. L. Lewton. 

 The world's longest bridge span, by Clifford E. Paine. 



