OF ARTS AND SCIENCES. 301 



cations carefully and recommend to the Academy for its 

 favorable action such applications as seem to be practicable 

 and to be worthy of aid. We urge that preference should be 

 given to work upon petroleum products and hydrocarbons, 

 because of Mr. Warren's special interest in the study of these 

 substances. 



II. We recommend that the Committee should be author- 

 ized to suggest subjects that need to be investigated, and be 

 directed to employ a chemist, or several chemists, at its dis- 

 cretion, to work out definite stated problems, under the super- 

 vision of the Committee. Preference should naturally be 

 given to actual laboratory work, but research in the literature 

 of chemistry, and other forms of literary labor, should not be 

 excluded when in the opinion of the Committee the elucida- 

 tion of a problem might be promoted by these means. 



III. The Committee should be empowered on occasion to 

 purchase materials and apparatus — including printed or 

 written memoirs — which may be needed for the investiga- 

 tions which may be recommended, and should be permitted 

 to employ assistants when necessary. 



• IV. We are of opinion that no medal or other form of 

 prize should be given or offered by the Academy in connec- 

 tion with the Warren Trust. 



All of which is respectfully submitted by 



F. H. Storer. 

 C. L. Jackson. 

 A. M. Comby. 



L. P. KlNNICUTT. 



The report was accepted and adopted by the Academy. 



The following papers were presented by. title : — 



Contributions from the Gray Herbarium of Harvard Uni- 

 versity : The North American Silenese and Polycarpea. By 

 B. L. Robinson. 



The " Hall Effect" at widely varying Temperatures in sev- 

 eral Metals. By A. L. Clough and E. II. Hall. 



On the Representation of Real Orthogonal Transforma- 

 tions. By Henry Taber. 



