OP ARTS AND SCIENCES. 513 



Seven hundred and ninetieth Meeting. 



March 10, 1S86. — Stated Meeting. 



The President in the chair. 



The President announced the death of Professor "William 

 Smith Clark, of Amherst, Resident Fellow. 



The Corresponding Secretary read letters from Mrs. Car- 

 penter, thanking- the Academy for the intended honor to her 

 late husband ; from the Society of Natural History at Cassel, 

 inviting the Academy to send a delegate to their semi-centen- 

 nial jubilee ; and from J. van Beneden, acknowledging his 

 election as Foreign Honorar}'- Member. 



The President announced vacancies occasioned by the 

 death of Mr. Henry P. Kidder, Treasurer, and the resigna- 

 tion of Mr. N. D. C. Hodges, Librarian. These vacancies 

 were filled by the election of the following officers : — 



Augustus Lowell, Treasurer. 

 Henry W. Haynes, Librarian. 



On the motion of Professor Cooke, it was 



Voted, That the following proposed alteration of the stat- 

 utes be referred to a committee : that tlie Librarian be ex 

 officio a member of the Council. 



The President appointed Messrs. Scudder, Gray, and Cooke 

 members of this Committee. 



Emil Heinrich Du Bois-Reymond, of Berlin, was elected a 

 Foreign Honorary Member in Class H., Section 3, in place 

 of the late Gabriel Gustav Valentin. 



The following paper was presented : — 



Equal Temperament and its Realization on Keyed Instru- 

 ments. By Charles R. Cross. 



Seven hundred and nlnety-flrst Meeting. 



April 14, 1886. — Monthly Meeting. 



The President in the chair. 



Mr. Haynes was appointed Recording Secretary /iro tempore. 

 VOL. XXI. (n. s. XIII.) 33 



