MINUTES. vii 



illustrations. The Society has largely increased the sum to be devoted 

 to publication in the ensuing year, but this will do nothing more than 

 put us back where we were before the inflation of prices began, and 

 does nothing to increase our facilities. This, I take it, is the most 

 important problem that we have to solve." 



Morning Session, 10.4^ O'Clock. 



The following papers were read : 



"Novae as Variable Stars," by E. E. Barnard, D.Sc, LL.D., 

 Professor of Practical Astronomy, University of Chicago, 

 Astronomer of Yerkes Observatory. 



"The Message of a Meteorite," by Monroe B. Snyder, of the 

 Philadelphia Observatory. 



" The Effect of Diurnal Variation of Clock Rates Upon Longi- 

 tude Work," by R. H. Tucker, C.E., Lick Observatory, Mt. 

 Hamilton, California, discussed by Prof. Ernest W. Brown. 



" Discussion of a Kinetic Theory of Gravitation, IL ; and Some 

 New Experiments in Gravitation. Second Paper," by Charles 

 F. Brush, Sc.D., LL.D., Cleveland. 



" Absorption Spectra and Ionization Potential in Dissociated 

 Gases." by Karl T. Compton, Ph.D., Princeton University. 

 (Introduced by Dr. Augustus Trowbridge.) Discussed by 

 Profs. Goodspeed and Snyder. 



" Recent Developments in Vacuum Tubes and Their Use," by 

 J. H. Morecroft, Columbia University, New York. (Intro- 

 duced by Dr. A. W. Goodspeed.) 



"A Primary Standard of Light," by Herbert E. Ives, Ph.D., 

 New York City. 



" Surface Equilibrium of Certain Colloid Solutions," by P. 

 Lecomte du Noiiy, M.D., of the Rockefeller Institute. (In- 

 troduced by Dr. Carrel.) Discussed by Prof. Scott. 



Afternoon Session, 2 O'Clock. 

 Hampton L. Carson, M.A., LL.D., Vice-President, in the Chair. 



Messrs. Douglas Campbell, John J. Carty, and Moses Gomberg, 

 recently elected members, subscribed the Laws and were admitted 

 into the Society. 



