696 PROCEEDINGS OP THE AMERICAN ACADEMY. 



Nine hundred and thirty-fifth Meeting. 



December 10, 1902. 



The President in the chair. 



The Corresponding Secretary read letters from L. Cremona 

 and J. J. Thomson, acknowledging their election as Foreign 

 Honorary Members ; and from the Entomological Society of 

 Belgium, announcing the death of its President, Pierre-Jules 

 Tosquinet. 



The President announced the following deaths : — 



Henry Mitchell, Resident Fellow in Class I., Section 1. 



Ogden Nicholas Rood, Associate Fellow in Class I., Section 2. 



Alfred Richard Cecil Selwyn, Associate Fellow in Class II., 

 Section 1. 



The following papers were presented : — 



" Results obtained from the Use of Quartz Geissler Tubes 

 in Spectrum Analysis." By John Trowbridge. 



"A Theory of Tone-Relations — Colors, Intensities, Neutral- 

 ity, Values." By Denman W. Ross. 



The following paper was presented by title : — - 



" The Pressure due to Radiation." By E. F. Nichols and 

 G. F. Hull. Presented by C. R. Cross. 



Nine hundred and thirty-sixth Meeting. 



January 14, 1903. — Stated Meeting. 



Vice-President Trowbridge in the chair. 

 On the motion of the Recording Secretary, it was 

 Voted, To meet on adjournment on the second Wednesday 

 in February. 



On the recommendation of the Rum ford Committee, it was 

 Voted, To appropriate from the income of the Rumford Fund 

 one hundred dollars ($100) for the preparation of a catalogue 

 of the books on light and heat in the library of the Academy. 



Voted, To transfer the appropriation of seven hundred and 

 fifty dollars (1750), granted to Theodore W. Richards at the 

 annual meeting of 1902, toward the prosecution of researches 



