Proceedings. xi 



March 5, 1921— 622d Meeting. » 



Vice-President Hitchcock in the chair; 32 persons present. 



M. A. Murray was elected to membership. 



Infonnal communications: I. Tidestrom, Note on the wearing 

 quahties of rag and pulp paper used in books; Paul Bartsch, 

 Note on rapid deterioration of pulp paper in books; H. C. 

 Oberholser, Note on the recent presence of the Whistling Swan 

 in local waters; Paul Bartsch, Note on local presence of Hol- 

 boell's Grebe. 



Formal communications: Dr. H. M. Hall, The Synthetic 

 Method of Botanical Taxonomy. 



March 19, 1921— 623d Meeting.^ 



President Hollister was in the chair; 55 persons were present. 



Informal communications: F. H. Knowlton, Note on the 

 strange antics of a Cardinal. 



Formal communications: F. H. Knowlton, Flora of Some 

 Newly Discovered Lake Beds of Southern Colorado; H. C. 

 Oberholser, The Breeding Water Fowl of the Great Plains 

 Region. 



April 2, 1921— 624th Meeting.^ 



Joint meeting with the Washington Academy of Sciences. 



Alfred H. Brooks, President of the Academy, was in the chair; 

 75 persons were present. 



Address of the retiring President: A. D. Hopkins, International 



Problems in Natural and Artificial Distribution of Plants and 



Animals.^ 



April 16, 1921— 625th Meeting.^ 



President Hollister in the chair; 66 persons were present. 



Informal communications: H. C. Oberholser, Note upon 

 Miss M. T. Cooke's Birds of the Washington Region, a publi- 

 cation of the Society. 



Formal communications: F. C. Lincoln, The Fall Migration 

 of Ducks from Lake Scutog, Ontario; E. W. Nelson, Alaska 

 and the Reindeer Industry. 



lAbstract to appear in Journ. Washington Acad. Sci. 

 ZAbstract to appear in Journ. Washington Acad. Sci. 



3 Notice of the meeting in Journal of the Washington Academy of Sciences. 



4 Abstract of the address in Journ. Washington Acad. Sci., vol. 11, p. 223, May 19, 1921. 

 ^Notice in Journ. Washington Acad. Sci., vol. 11. 



