642 RECORDS. 



land birds common to eastern North America. The early plum- 

 age of these birds was described together with the time and 

 method of the acquisition of later plumages. Stress was laid 

 upon the underlying principles of the sequence or succession of 

 plumages peculiar to each species, and the moults and plumages 

 were classified according to a definite scheme by the author. 



Gary N. Calkins, 



Secretary. 



SECTION OF GEOLOGY AND MINERALOGY. 

 March 20, 1899. 



Section met at 8 P. M., Professor Kemp, presiding. 



The minutes of the last meeting of Section were read and ap- 

 proved. 



The following program was then offered : 



Richard E. Dodge, A Lake History in Northern New 

 York, illustrated by diagrams. 



John D. Irving, The Geology of the Northern Black 

 Hills and their Siliceous Gold Ores, with illustrations by 

 lantern and by specimens. 



Mr. G. F. Kunz was nominated and elected as Chairman, and 

 Dr. Alexis A. Julien as Secretary of Section for ensuing year. 



The subject of Mr. Irving's paper was further discussed by 

 Mr. John H. Caswell and by the Chairman. 



Alexis A. Julien, 



Secretary. 



SUB-SECTION OF ANTHROPOLOGY AND 

 PSYCHOLOGY. 



March 27, 1899. 



The annual meeting of the Sub-section was called to order by 

 the Secretary of the Academ}', Professor R. E. Dodge. The 

 following officers were elected for the ensuing year : Chairman, 

 Dr. Franz Boas ; Secretary, Dr. C. H. Judd. 



