378 PROCEEDINGS OF THE AMERICAN ACADEMY. 



Professor George D. Birkhoff. "Einstein's Generalized Rela- 

 tivity or Theory of Gravitation." 



Mr. George R. Agassiz. "Astronomical Footnotes to the Ein- 

 stein Theories." 



Discussion followed by Elihu Thomson, E. H. Hall, W. E. Story, 

 A. G. Webster, W. S. Franklin, E. B. Wilson, E. V. Huntington, 

 and A. C. Lane. 



The Meeting was then dissolved. 



One thousand and ninety-fourth Meeting 



November 10, 1920. — Stated Meeting. 



The Academy met at its House at 8.15 p.m. 



The President in the Chair. 



Thirty-nine Fellows and two guests were present. 



The Transactions of the last Meeting were read and approved. 



On the recommendation of the Council, it was 



Voted, That from the income of the General Fund an appropria- 

 tion of two hundred dollars ($200) be made for Expense of Library. 



The Corresponding Secretary reported that to fill a vacancy in 

 the Council, the Council had elected Desmond FitzGerald, Class L, 

 Section 4. 



The President announced the death of the following Fellows: 

 Harmon Northrop Morse, Class L, Section 3 (Chemistry); Arthur 

 Searle, Class I., Section 1 (Mathematics and Astronomy). 



The President announced that he had appointed E. B. Wilson, 

 C. H. Warren, and F. N. Robinson as the Committee of three to 

 consider the whole question of elections to the Academy. 



The following Communication was presented: 



Mr. Dows Dunham. "The Sudanese Pyramid," with lantern 

 slide illustrations from Dr. Reisner's excavations. 



The following paper was presented by title : 



"The Motion of a Particle on a Surface for any positional Field 

 of Force." By Joseph Lipka. 



The Meeting was then dissolved. 



