418 PROCEEDINGS OF THE AMERICAN ACADEMY 



The following papers were presented by title : — 



On Sodic Zincates. By C. Loring Jackson and Arthur M. 

 Comey. 



Action of Sodium Malonic Ester on Tribromdinitrobenzol. 

 By C. Loring' Jackson and W. S. Robinson. 



Contributions from the Physical Laboratory of Harvard 

 University : 1. Limits of the Ultra Violet Spectra of Metals. 

 By John Trowbridge and W. C. Sabine. 2. Photography of 

 the Infra Red Spectra. By John Trowbridge and J. C. B. 

 Burbank. 3. On a new Method of Measuring the Efficiency 

 of Electrical Transformers. By John Trowbridge. 4. Ex- 

 periments on the Electromagnetic Theory of Light. By 

 John Trowbridge. 



Eight hundred and fifteenth Meeting. 



October 10, 1888. — Stated Meeting. 



The President in the chair. 



The President announced the death of Rudolph Julius 

 Emmanuel Clausius, Foreign Honorary Member, and of 

 Samuel Kneeland, Resident Fellow. 



The Corresponding Secretary read a letter from the Secre- 

 tary of the Franklin Institute, announcing that the Institute 

 is empowered to award certain medals for meritorious dis- 

 coveries and inventions which tend to the progress of the 

 arts and sciences. 



The following gentlemen were elected members of the 

 Academy : — ■ 



John William Strutt, Lord Rayleigb, of Witham, to be a 

 Foreign Honorary Member in Class I., Section 3, in place of 

 the late Balfour Stewart. 



Friherre Adolf Erik Nordenskiold, of Stockholm, to be a 

 Foreign Honorary Member, in Class II., Section 1, in place 

 of the late Bernhard Studer. 



Carl Johann Maximowicz, of St. Petersburg, to be a For- 

 eign Honorary Member in Class II., Section 2, in place of the 

 late August Wilhelm Eichler. 



