650 



SCIENCE 



[N. S. Vol. XLIII. No. 1114 



"Anomalous Dispersion Plienomena in Electric 

 Turnaee Spectra," by Arthur S. King (introduced 

 by G. El Hale). 



' ' Illustrations of the New Spectroscopic Method 

 of Measuring Stellar Distances," by Walter S. 

 Adams (introduced by G. E. Hale). 



"Some Results with the New 10-inch Photo- 

 graphic Telescope," by Harlow Shapley (intro- 

 duced by G. E. Hale). 



' ' The Pyranometer, an Instrument for the Meas- 

 urement of Sky Radiation," by C. G. Abbot and 

 L. B. Aldrich. 



"Invisible Companions of Binary Stars," by G. 

 C. Comstock. 



"Theory of Electric Conduction in Metals," by 

 Edwin H. Hall. 



"The Evolution of the Stars," by F. E. Moul- 

 ton. 



"The Minor Planets discovered by James C. 

 "Watson, " by A. O. Leuschner. 



Afternoon Session 



"Biography of Professor Theodore Nicholas 

 Gill," by Wm. H. Dall. (By title.) 



"Biography of Professor Edward Singleton 

 Holden," by W. W. Campbell. (By title.) 



' ' Biography of Professor Simon Newcomb, ' ' by 

 W. W. Campbell. (By title.) 



"Biography of John Shaw Billings," by Field- 

 ing H. Garrison. (By title.) 



' ' Report of the "Work of the Committee upon the 

 Panama Canal Slides," by Charles R. Van Hise, 

 chairman. 



"'The Mechanics of the Panama Slides," by H. 

 Fielding Eeid. 



"The Present State of Knowledge of the Ex- 

 treme Ultra-violet," by Theodore Lyman, Director 

 Jefferson Physical Laboratory, Harvard Univer- 

 sity. (By invitation of the Program Committee.) 



' ' A Redetermination of e and N," by Robert A. 

 Millikan. 



"The Relation of Investigational "Work to the 

 Enforcement of the Food and Drugs Act," by 

 Carl L. Alsberg. (By invitation of the Program 

 Committee.) 



"Recent Exploration on the Mesa Verde Na- 

 tional Park," by J. "Walter Fewkes. 



"Further Evidence on the Nature of Crown 

 Gall and Cancer and that Cancer in plants offers 

 strong presumptive evidence both of the parasitic 

 origin and of the essential unity of the various 

 forms of Cancer in man and animals," by Erwin 

 F. Smith. 



"Wednesday, April 19 

 Second "William Ellery Hale Lecture, by Henry 

 Fairfield Osborn, President of the American Mu- 

 seum of Natural History. Subject: "The Origin 

 and Evolution of Life on the Earth." (Illus- 

 trated.) 



PRESENTATION OP MEDALS 



At the annual dinner of the academy held at the 

 Hotel Raleigh on April 18, 1916, the medals for 

 eminence in the application of science to the pub- 

 lie welfare were awarded to Cleveland Abbe and 

 to Gifford Pinehot, and the James Craig "Watson 

 medal was awarded to Armin Otto Leuschner. 



The president announced the following deaths 

 since the last annual meeting of the academy: 



John Ulrio Nef, died on August 13, 1915, elected 

 in 1904. 



Frederic "Ward Putnam, died on August 18, 

 1915, elected in 1885. 



Arthur W. "Wright, died on December 19, 1915, 

 elected in 1881. 



Eugene "W. Hilgard, died on January 8, 1916, 

 elected in 1872. 



The reports of the president and treasurer for 

 the year 1915 were presented to the academy in 

 printed form as transmitted to the Senate of the 

 United States by the president of the academy. 



report of the home secretary 

 The President of the National Academy of 

 Sciences. 



Sir: 1 have the honor to present the following 

 report on the publications and membership of the 

 National Academy of Sciences for the year end- 

 ing April 19, 1916. 



The Memoirs of the National Academy of Sci- 

 ences, Volume 12, part 2, entitled " "V"ariations. 

 and Ecological Distribution of the Snails of the 

 Genus lo," by Charles C. Adams, has been pub- 

 lished and distributed, as has also the memoir 

 forming Volume 12, being "A Catalogue of the 

 Meteorites of North America," by Oliver C. Far- 

 rington. Volume 14, memoir 1, entitled "Report 

 on Researches on the Chemical and Mineralogieal 

 Composition of Meteorites, with Especial Refer- 

 ence to their Minor Constituents, ' ' by George 

 Perkins Merrill, is going through the press and 

 the final proof has been passed. It awaits casting 

 and printing before it is published. 



The biographical memoirs of John "W. Powell, 

 Miers Fisher Longstreth, Charles Anthony Schott, 

 Peter Lesley, Henry Morton and Alfred Marshall 

 Mayer have been published, and that of George 

 "William Hill, by Ernest "W. Brown, has also been 

 published but not distributed. 



Three members have died since the last annual 

 meeting: John Ulric Nef, on August 13, 1915, 

 elected in 1904; Frederic "W. Putnam, on August 



