x The Biological Society of Washington. 



May 24. 1898— 294th Meeting. 



The President in the chair and 20 persons present. 



The following communications were presented : 



F. C. Kenyon : Recent Experiments on the Nervous System 

 of Arthropods, their Significance, and the Problems that Remain 

 Unsolved. 



Nathan Banks: The Scorpions of the Eastern United States.* 



Gilbert H. Hicks : The Vitality of Seeds. 



H. J. Webber: Researches on the Reproduction of Cycada- 

 ceous Plants. 



October 22, 1898-295th Meeting. 



The President in the chair and 37 persons present. 



E. L. Morris commented on the frequency with which speci- 

 mens of Colocasia esculenta in cultivation in Washington had 

 bloomed during the past summer. He also cited a case of morn- 

 ing flowering in Cereus grandiflorus. 



T. A. Williams noted the occurrence of a rare lichen, Hydro- 

 thyria venosa, at several localities in the West. 



T. S. Palmer spoke of Nanny/mini), an alleged living representa- 

 tive of a family of extinct edentates. 



The following communications were presented : 



J. N. Rose: Proposed Rearrangement of the Subfamily Aga- 

 vese. ( Illustrated by numerous living plants.) f 



F. A. Lucas: The Fossil Bison of North America, with De- 

 scription of a New Species. £ 



A. J. Pieters : Problems of Aquatic Vegetation. § 

 Gilbert H. Hicks : The Effect of Certain Fertilizers on the 

 Germination of Seeds. 



November 5, 1898— 296th Meeting. 



The President in the chair and 42 persons present. 

 F. V. Coville exhibited a piece of lava from Mt. St. Helens, 

 bearing the impression of the hark of a, pine. 



* To be published probably in Trans. Am. Ent. Soc. 

 t To be published in Contr. U. S. Nat. Herb. 

 t To be published in Proc. U. S. Nat. Mus. 



'i To be published as a Bulletin of the Division of Botany, U. S. Dept. 

 of Agriculture. 



