CONTENTS. V 



Page 

 XXV. 1. A Synopsis of the Mexican and Central American Sjjecies 

 of Salvia. 



2. A Revision of the Mexican and Central American Solanums 



of the Subsection Torvaria. 



3. Some undescribtd Mexican Phanerogams, chief y Labiatae and 



Solanaceae. By M. L. Fernald 487 



XXVI. On the Singular Transformations of Groups Generated by In- 

 finitesimal Transformations. By Henry Taber .... 575 



Proceedings G01 



A Table of Atomic Weights. By Theodore William Richards . 621 



Report of the Council 623 



Biographical Notices 625 



Epes Sargent Dixwell 625 



John Cummings 628 



John Codman Ropes 629 



John Lowell 634 



Officers and Committees for 1899-1900 643 



List of the Fellows and Foreign Honorary Members . . . 644 



Statutes and Standing Votes 653 



Index 665 



