OF ARTS AND SCIENCES. 507 



Addison Emery Verrill, of New Haven, to be an Associate 

 Fellow in Class II., Section 3. 



Horatio C. Wood, of Philadelphia, to be an Associate Fel- 

 low in Class II., Section 3. 



Henry Adams, of Washington, to be an Associate Fellow 

 in Class III., Section 3. 



William Robert Ware, of New York, to be an Associate 

 Fellow in Class III., Section 4. 



The following papers were presented : — 



On new General Reactions with Sodiumacetacetic and So- 

 dium-malonic Ethers. By Arthur Michael. 



Observations of Variable Stars in 1886. By Edward C. 

 Pickering. 



Professor Cross presented the following papers : — 



The Efficiency of small Electro-motors. By H. E. H. 

 Clifford. 



On Tests of a Commercial Storage-Battery. By Edward 

 E. Higgins. 



Professor Jackson presented, by title, the following pa- 

 pers : — 



On Benzoltrisulphonic Acid. By C. Loring Jackson and 

 John F. Wing. 



On the Action of Nitric Acid on Symmetrical Trichlor- 

 benzol. By C. Loring Jackson and John F. Wing. 



Professor Pickering called attention to the circular con- 

 cerning the Boyden Fund issued by the Harvard College 

 Observatory. 



£iglit hundred and first Meeting. 



April 13, 1887. — Monthly Meeting. 



The Academy met at the Peabody Museum of American 

 Archaeology and Ethnology, Cambridge. 



The President in the chair. 



The Corresponding Secretary announced that he had re- 

 ceived letters from Messrs. Thomas M. Drown, Edward J. 



