OP ARTS AND SCIENCES. 617 



11. Synopses of the Genera Jaegeria and Russelia. By B. 

 L. Robinson. 



III. New Dioscoreas from Mexico. By E. B. Uline. 



IV. New Phanerogams chiefly Gamopetalae from Mexico 



and Centi'al America. By B. L. Robinson. 



Nine hundred and fourteenth Meeting. 



February 14, 1900. 



In the absence of the regular presiding officers, Samuel H. 

 ScuDDER acted as President pro tempore. 



The chair announced the death of the following Foreign 

 Honorary Members : — 



James Martineau, of London, Class III., Section 1. 



Carl Friedrich Rammelsberg, of Berlin, Class II., Section 1. 



John Ruskin, of Coniston, Class III., Section 4. 



The following letters were received : from Mathilde Rammels- 

 berg, announcing the death of Carl Friedrich Rammelsberg, 

 Foreign Honorary Member of the Academy in Class II,, Section 

 1 ; from W. M. Davis, accepting his election as Corresponding 

 Secretary ; from John Williams White, accepting his appoint- 

 ment as Delegate to the celebration of the 200th anniversary of 

 the foundation of the Royal Prussian Academy of Sciences. 



The following papers were presented by title : — 



The Metamerism of the Hirudinea. By W. E. Castle. Pre- 

 sented by E. L. Mark. 



The Freshwater Tertiary Formations of the Rocky Mountain 

 region. By W. M. Davis. 



On the Determination of Sulphuric Acid in the Presence of 

 Iron : a Note on Solid Solutions. By Theodore William 

 Richards. 



The Species of the Orthopteran Genus Derotmema. By 

 Samuel H. Scudder. 



Crawford H. Toy gave an informal account of a new theory 

 of totemism. 



