394 PROCEEDINGS OF THE AMERICAN ACADEMY 



The following paper was presented by title : — 

 " On Indirect Determination of Chlorine and Bromine by 

 Electrolysis." By Leonard P. Kinnicutt. 



Seven hundred and forty-seventh Meeting. 



December 14, 1881. — Monthly Meeting. 



The President in the chair. 



The President informed the Academy that a letter had 

 been received from General L. P. di Cesnola, acknowledging 

 his election as Associate Fellow ; also a letter announcing the 

 death of Herr Geheimerath J. C. Bluntschli, D.C.L., of 

 Heidelberg, Foreign Honorary Member. 



The following papers were presented : — 



" On Curcumiu.'' By C. L. Jackson and A. E. Menke. 



" A Comparison of the Harvard College Observatory Cata- 

 logue of Stars for 1875 with the Fundamental Systems of 

 Auwers, Boss, Safford, and Newcomb." By William A. 

 Rogers. 



" On Maxwell's Law of the Distribution of Energy among 

 the Molecules." By N. D. C. Hodges. 



Professor Wolcott Gibbs announced his discovery of the 

 following new complex acids : — 



Arsenoso-molybdic acid, Vanadoso-tungstic acid, 



Arsenoso-tungstic acid, Vanadoso-phosphoric acid, 



Antimonoso-molybdic acid, Vanadoso-arsenic acid, 



Antimonoso-tungstic acid, Vanadoso-antimouic acid, 

 Vanadoso-molybdic acid. 



All these acids have well-defined series of salts. 



Seven hundred and forty-eighth Meeting. 



January 11, 1882. — Stated Meeting. 



A quorum was not present, and the Academy was not 

 called to order. 



