VOL. X, pp. vn-xii DECEMBER 31, 1896 



PROCEEDINGS 



OF THK 



BIOLOGICAL SOCIETY OF WASHINGTON 



PROCEEDINGS. 



The Society meets in the Assembly Hall of the Cosmos Club 

 on alternate Saturdays at 8 p. m. Brief notices of the meetings 

 are published in 'Science.'' 



January 11, 1896 -253d Meeting. 



Vice-President B. E. Fernow in the chair and one hundred and 



thirteen persons present. 



The following communications were presented : 



Gerrit S. Miller, Jr. : The Subgenera of Voles (Microtinse)* 



T. S. Palmer : Rabbit Drives in the West.f (Illustrated by 



lantern slides.) 



V. A. 'Moore: The Flagella of Motile Bacteria with special 



Reference to their Value in Differentiating Species. (Illustrated 



by lantern slides.) 



January 25, 1896 254th Meeting. 



Vice-President B. E. Fernow in the chair and twenty-three 

 persons present. 



The following communications were presented : 



Charles F. Simpson : On the Extra-limital Mississippi Unios. 



M. B. Waite: The Life History of the Pear Blight Microbe.|| 



* Genera and Subgenera of Voles and Lemmings. -\N. Am. Fauna, 

 No. 12, pp. 78, pis. iii, text figs. 40, July 23, 1896. 



f The Jack Rabbits of the United States. <Bull. No. 8, Div. Orni 

 thology and Mammalogy, U. S. Dept. Agriculture, chap. V, pp. 47-64, 

 March, 1896. 



J Journ. Am. Public Health Asso., xx, 432-444, October, 1895. 



% Am. Nat., 30, 379-384, May, 1896. 



|| Bull. No. , Div. Vegetable Phys. and Path., U. S. Dept. Agric. (In 

 press. ) 



