448 PROCEEDINGS OF THE AMERICAN ACADEMY. 



"A Revision of the Endogoneae." By Roland Thaxter. 



" The Echinoderms of the Challenger Bank, Bermuda." By 

 Hubert L. Clark. Presented by E. L. Mark. 



"The Heat of Vaporization of Mercury." By F. W. Loomis. 

 Presented by P. W. Bridgman. 



"The Joule-Thomson Effect in Air." By P. H. Royster. Pre- 

 sented by P. W. Bridgman. 



"The Ratio of the Calorie at 73° to that at 20°." By Arnold 

 Romberg. Presented by P. W. Bridgman. 



The Meeting was then dissolved. 



One thousand one hundred and fifteenth Meeting. 



May 10, 1922.— Annual Meeting. 



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



The President in the Chair. 



Thirty-seven Fellows were present. 



The Transactions of the Meeting of April 12 were read and 

 approved. 



Professor J. R. Jewett was appointed a delegate to represent the 

 Academy at the celebration of the 100th anniversary of the Societe 

 Asiatique de Paris, July 10-13, 1922. 



The Corresponding Secretary reported that the Council had 

 transferred William Emerson, with his consent, from Class I., 

 Section 4 to Class HI., Section 4. 



The Corresponding Secretary presented the following biographi- 

 cal notices: — Joel Asaph Allen, by H. C. Bumpus; Eliot Channing 

 Clarke, by G. F. Swain; Henry Lee Higginson, by M. A. DeW. 

 Howe; Franklin Paine Mall, by W. T. Councilman; John Elliot 

 Pillsbury, by W. H. Dall; Elmer Ernest Southard, by C. M. 

 Campbell; Andrew Dickson White, by W. D. Bancroft; Edward 

 James Young, by W. W. Fenn. 



The following report of the Council was presented: — 



Since the last report of the Council, there have been reported the 

 deaths of seven Fellows: Joel Asaph Allen, Charles Leonard 

 Bouton, Charles Pickering Bowditch, Eliot Channing Clarke, 



