534 PROCEEDINGS OF THE AMERICAN ACADEMY. 



The following gentlemen were elected members of the 

 Academy : — 



Louis Derr, of Brookline, as Resident Fellow in Class I, Sec- 

 tion 2 (Physics). 



John Uliic Nef, of Chicago, as Associate Fellow in Class I, 

 Section 3 (Chemistry). 



On the recommendations of the Recording Secretary, the 

 Chairman of the Rumford Committee, and the Chairman of the 

 Publishing Committee, it was 



Voted. To make the following appropriations : From the in- 

 come of the General Fund, for House expenses, i$425 ; for 

 Books and binding, $340 ; for Meeting expenses, 135 ; from the 

 income of the Rumford Fund, for the furtherance of research, 

 1141.90 (the unexpended balance of a previous grant) ; from the 

 income of the Publication Fund for publication, -$800. 



Vice-President Trowbridge announced that the Rumford 

 Premium had been awarded to Mr. Edward Goodrich Acheson 

 for the application of heat in the electric furnace to the indus- 

 trial production of carl)orundum, graphite, and other new and 

 useful substances. He then called upon the chaiiman of the 

 Rumford Committee, Professor Charles R. Cross, who gave a 

 short account of the previous awards of the Rumford Medal, 

 followed by a brief analysis of Mr. Acheson's work and the 

 circumstances which influenced the Committee to recommend 

 the award to him. 



Vice-President Trowbridge then presented the medal in the 

 name of the Academy to Mr. Acheson, who expressed his ap- 

 preciation of the honor conferred upon him, saying : " The 

 medal has been a great incentive to me from lioyhood, and I 

 had hoped sometime to attain it. To-night my dream has come 

 true." 



On the invitation of the Chair he then gave an account in 

 detail of his discoveries, illustrated by a number of interesting 

 demonstrations. 



The following papers were presented by title : — 



"The Invariants of Linear Differential Expressions." By 

 Frank Lwin. Presented by Maxime Bocher. 



"Contributions toward a Monograph of the Laboulbeniaceae. 

 Part IL" By Roland Thaxter. 



