Proceedings. ix 



March 30, 1912 497th Meeting. 



President Nelson in the chair and 54 persons present. 

 The following communications were presented : 

 " Why is a Weed " : C. \'. Piper, 

 [ntroduction of Tropical Fruits into the United States " : 

 David (i. Fairchild. 



April 13, 1912 — 498th Meeting. 



President Nelson in the chair and •">'.) persons present. 



B. \V. Evermann exhibited dyed and undyed skins of the fur 

 seal and made remarks on classification of these furs and the 

 aims of the Bureau of Fisheries regarding the fur seal. 



The following communications were presented : 



" The Fossil Flora of Alaska " : Arthur Hollick. 



Winter Animal Life About the Base of Mt. McKinley 

 Charles Sheldon. 



April 27, 1912— 499th Meeting. 



President Nelson in the chair and 32 persons present. 

 The following communications were presented : 



Remarks on a Skeleton of the Dinosaur Stegosavrus " : 

 ( '. W. ( id more. 



"Are Rabbits Rodents ? " J. W. Gidley. 

 ' Early Bird Migration in a Late Spring at Washington, 

 D. C., 1912'" : Wells W. Cooke. 



October 19, 1912— 500th Meeting. 



The 500th meeting of the Society was celebrated as a field 

 day at Plummer's Island, Potomac River, the members and 

 friends being the guests of the Washington Biologists' Field 

 Club. In spite of a threatening morning about forty persons 

 attended. A held luncheon was served and an informal pro- 

 gram was followed, Paul Bartsch in the chair. Reminiscent 

 speeches were made by Theodore Cull, L. 0. Howard, F. A. 

 Coville, Dr. Clara Ludlow, and others. 



November 2, 1912— 501st Meeting. 



Vice-President J. X. Rose in the chair and 38 persons 

 present. 



