310 PROCEEDINGS OF THE AMERICAN ACADEMY 



dent Fellows ; Spencer F. Baird, Associate Fellow ; Hugh A. 

 J. Munro, Foreign Honorary Member. 



Voted, To meet, on adjournment, on the second Wednesday 

 in November. 



Professor Charles R. Cross presented the following pa- 

 pers : — 



" On the Inverse Electromotive Force of the Voltaic Arc 

 containing Volatilized Salts." 



" Further Studies of the Melting Platinum Standard of 

 Light." 



Eight hundred and sixth Meeting. 



November 9, 1887 — Adjourned Stated Meeting. 



The President in the chair. 



The President announced the death of Gustav Kirchhoff, 

 of Berlin, Foreign Honorary Member. 



Professor Truman H. Safford presented the following 

 papers : — 



" On the Approach of the North Pole and the Polar Star." 



" On the Right Ascension of Stars near the North Pole, 

 observed at Williamstown, Massachusetts, (Field Memorial 

 Observatory,) in the Year 1885." 



The following paper was presented by Professor Trow- 

 bridge : — 



" A Preliminary Investigation of the Velocity of Sound 

 in Liquids." By Harold Whiting. 



Eight hundred and seventh Meeting. 



December 14, 1887. — Monthly Meeting. 



The President in the chair. 



Professor Holman presented a paper entitled, " Boiling 

 Points of Naphthaline, Benzophenone, and Benzol under con- 

 trolled Pressures, with special Reference to Thermometry." 

 By Silas W. Holman and Walter H. Gleason. 



