OF ARTS AND SCIENCES. 317 



The following papers were presented : — 



" On a New Property of Conic Sections." By Professor 

 Benjamin Peirce. 



" On the Method of Least Squares." By Professor T. H. 

 Safford. 



Mr. W. A. Rogers described some further investigations he 

 had made on the lines of Noljert, and presented a paper by 

 M. Trouvelot, " On Veiled Sun-Spots." 



The following papers were j)resented by title : — 



" On the Flora of Guadalupe Island." By Sereno Watson. 



" Remarks on Magnetic Distribution." By Professor H. 

 A. Rowland. 



Six hundred and eighty-fourth Meeting. 



November 10, 1875. — Stated Meeting. 



The President in the chair. 



Mr. W. A. Rogers was appointed Secretary j?ro tempore. 



Upon the recommendation of the Council, the following 

 gentlemen were elected members of the Academy : — 



Andrew Crombie Ramsay, of London, to be a Foreign 

 Honorary Member in Class IL, Section 1, in place of the 

 late Sir Charles Lyell. 



Alfred !M. Mayer, of Hoboken, to be an Associate Fellow 

 in Class I., Section 3. 



Frederick A. Genth, of Philadelphia, to be an Associate 

 Fellow in Class XL, Section 1. 



Joseph LeConte, of San Francisco, to be an Associate Fel- 

 low in Class IL, Section 1. 



Othniel Charles Marsh, of New Haven, to be an Associate 

 Fellow in Class IL, Section 2. 



Daniel C. Gilman, of Baltimore, to be an Associate Fellow 

 in Class III., Section 2. 



William Sellers, of Philadelphia, to be an Associate Fellow 

 in Class I., Section 4. 



Albert Nicholas Arnold, of Hamilton, N. Y., to be an Asso- 

 ciate Fellow in Class III., Section 2. 



