Record. xxxv 



December 2, 1901. 



President Moore in the chair, eighteen persons present. 



Mr. J. Arthur Harris presented in abstract a paper on 

 Normal and teratological thorns of Gleditschia triacanthos, L. 



Professor A. S. Chessin delivered an interesting address 

 on The harmony of tone and color. The speaker said that 

 although the idea is not new that colors, like tones, are sub- 

 ject to laws of harmony, he did not know that any systematic 

 theory concerning this had thus far been presented, and the 

 object of the paper was to establish such a theory. A color- 

 scale was constructed and the properties of the intervals cor- 

 responding to those appearing in the musical scale were 

 discussed, and the conclusion was reached that within the 

 limit of an octave the laws of harmony in tone and color are 

 identical. 



A paper by Professor A. S. Chessin, on The true potential 

 of the force of gravity, was presented and read by title, the 

 author remarking that this was the first of a series of detailed 

 papers bearing upon the general subject, the broad conclusions 

 concerning which he had presented in synopsis at a recent 

 meeting of the Academv. 



In accordance with the By-Laws of the Academy, a com- 

 mittee, which consisted of Messrs. Green, Evers and Nipher, 

 was elected to nominate officers for the year 1902. 



December 16, 1901. 



President Moore in the chair, twelve persons present. 

 The nominating committee reported the following list of 

 candidates for the year 1902 : — 



President Henry W. Eliot. 



First Vice-President D. S. H. Smith. 



Second Vice-President William E. Guy. 



Recording Secretary William Trelease. 



Corresponding Secretary Ernest P. Olshausen. 



Treasurer Enno Sander. 



Librarian G. Hambach. 



Curators G. Hambach, 



Julius Hurter, 

 Hermann von Schrenk. 



Directors Amand Ravold. 



Adolf Alt. 



