3T4 Sm CHARLES WHEATSTONE. 



of the theory a simple and clear mathematical form, devised a new 

 and advantageous terminology, and introduced most ingenious special 

 forms of apparatus, in particular that now universally known as 

 Wheatstone's bridge. Ilis prismatic analysis of the light of the elec- 

 tric spark taken between electrodes of mercury belongs with the early 

 history of the spectroscope, and deserves to be cited in connection 

 with that instrument. Wheatstone's eminent services to science re- 

 ceived the fullest recognition during his lifetime, in both wealth and 

 honor. It is, perhaps, too soon to measure his intellectual stature 

 witli perfect fairness, and materials for the story of his life are still 

 wanting ; but his name will always be associated with two of the most 

 beautiful and useful of human inventions. On the 19th of October 

 last, he closed a life which may well be called memorable. 



Since the last Annual Meeting, the Academy has received 

 an accession of nineteen new members : eight Fellows, — 

 Henry Adams, Thomas Dwight, R. T. Edes, E. L. God- 

 kin, Charles E. Hamlin, Hiram F. Mills, Ira Remsen, John 

 L. Sibley; eight Associate Fellows, — A. N. Arnold, Joseph 

 Le Conte, F. A. Genth, D. C. Gilman, O. C. Marsh, Alfred 

 M. Mayer, H. A. Rowland, W. Sellers ; and three Foreign 

 Honorary Members, — Balfour Stewart, A. C. Ramsay, Count 

 Sclopis di Salerano. On the other hand, by removal from 

 the State, or by resignation, the following ten Fellows have 

 abandoned their membership: S. P. Andrews, A. N. Arnold, 

 J. B. Greenough, R. S. Greenough, Thomas Hill, Nathaniel 

 Holmes, Edward Pearce, W. H. Pettee, G. M. Searle, W. H. 

 Swift. 



The list of the Academy corrected to May 10, 1876, is 

 hereto added. It includes 191 Fellows, 94 Associate Fel- 

 lows, and QQ Foreign Honorary Members. 



