S04 PROCEEDINGS OF THE AMERICAN ACADEMY. 



Cambridge; Robert Grant, of Boston; John Torrey Morse, Jr., 

 of Boston; Bela Lyon Pratt, of Boston; George Edward Wood- 

 berry, of Beverly. 



The following communication was giA^en : — 



Dr. Theodore Lyman. " A Journey in the Highlands of Siberia. "^ 



The following papers were presented by title : — 



"Passivity of Iron under Boiler Conditions." By H. G. Byers 

 and F. T. Vores. Presented by H. P. Talbot. 



" Relation between the Magnetic Field and the Passive State of 

 Iron." By H. G. Byers and S. C. Langdon. Presented by H. P. 

 Talbot. 



Contributions from the Gray Herbarium. New Series XLL 

 I. A Redisposition of the Species heretofore referred to Lepto- 

 syne. II. A Revision of Encelia and some Related Genera. 

 By S. F. Blake. 



Contributions from the Gray Herbarium. New Series XLIL 

 I: A Key to the Genera of the Compositae Eupatoricae. By 

 B. L. Robinson. II: Revisions of Alomia, Ageratum, Cteno- 

 pappus and Oxylobus. By B. L. Robinson. Ill: Some new 

 Combinations required by the International Rules. By C. A. 

 Weatherby, IV: On the Graminae collected by Professor 

 Morton C. Peck, in British Honduras, 1905-1907.' By F. F. 

 Hubbard. V: Diagnoses and Transfers among the Spermato- 

 phytes. By B. L. Robinson. 



