REPORT OF NATIONAL MUSEUM, 1919. 33 



by a reception by the Secretary and Regents of the Smithsonian 

 to the members of the Academy and their friends, all the exhibition 

 halls of the first floor including those of the National Gallery of 

 Art being opened to the guests. 



Other speakers before the Academy and their subjects included the 

 following : Alfred G. Mayer, The Age of the Fringing Reef of Tu- 

 tuila, American Samoa ; Charles D. Walcott, Seaweeds and Sponges 

 of the Middle Cambrian ; Robert G. Aitken, The Spectra of the Vis- 

 ual Binary Stars; George E. Hale, F. EUerman, S. B. Nicholson, 

 and A. H. Joy, The Magnetic Polarity of Sun Spots; Walter S. 

 Adams and A. H. Joy, The Motions in Space of Some Stars of High 

 Radial Velocity; Walter S. Adams and G. Stromberg, The Use of 

 the Spectroscopic Method for Determining the Parallaxes of the 

 Brighter Stars; Adriaan van Maanen, Evidence of Stream-motion 

 Afforded by the Faint Stars in the Orion Nebula ; Graham Lusk and 

 H. V. Atkinson, The Production of Fat from Protein After Giving 

 Meat in Large Quantity to a Dog; William S. Halsted, End-to-end 

 Anastomosis of the Jntestine — Experimental Study; Robert M. 

 Yerkes, Psychological Examining in the United States Army ; Fred- 

 erick H. Scares, Relation Between Color and Luminosity for Stars 

 of the Same Spectral Type; Frederick H. Scares, A. van Maanen, 

 and F. EUerman, Deviations of the Sun's General Magnetic Field 

 from that of a Uniformly Magnetized Sphere; W. W. Campbell, 

 The Solar Corona; Herbert E. Gregory, Plans for Exploration 

 of the Pacific; Francis G. Benedict, W. R. Miles, and Alice John- 

 son, The Temperature of the Human Skin; S. J. Meltzer and 

 M. Wollstein, The Influence of Degeneration of a Vagus Nerve 

 upon the Development of Pneumonia; Edwin H. Hall, (1) The 

 Effect of Great Pressure on the Electric Conductivity and Thermo- 

 electric Properties of Metals, (2) Comments on the Results of 

 Bridgman's Experiments, (3) Thermal Conduction in Metals, from 

 the Standpoint of Dual Electric Conduction, and (4) The Thermo- 

 electric Equation P=TdV/dT once more; Charles Lane Poor, 

 Line of Position Computer ; Irving Langmuir, The Arrangement of 

 Electrons in Atoms and Molecules; Henry F. Osborn, (1) Palseomas- 

 todon, the Ancestor of the Long-jawed Mastodons Only, and (2) 

 Seventeen Skeletons of Moropus: Probable Habits of this Animal; 

 Thomas B. Osborne and Alfred J. Wakeman, The Preparation of 

 Vitamine-free Proteins; Arthur G. Webster, (1) Tentative Results 

 in Interior Ballistics, (2) Tentative Results in Elastic Hysteresis, 

 (3) The Most Perfect Tuning Fork, and (4) Angle of Repose of 

 Wet Sand; Edward Kasner, Geometiy of the Wave Equation; C. 

 G. Abbot, (1) Rotating Projectiles from Smooth-bore Guns, (2) 

 Means for Measuring the Speed of Projectiles in Flight, and (3) 



143943°— 20 3 



