XII BIOLOGICAL SOCIETY OF WASHINGTON. 



ONE HUNDRED AND SEVENTIETH MEETING, 

 (Tenth Annual.) 



The President in the chair, and forty-two members present. 



The annual reports of the Secretary and Treasurer were 

 read and accepted. 



The following board of officers was elected for the ensuing 

 year : 



President C. Hart Merriam. 



Vice- Presidents C. V. Riley, Frank Baker, Richard Rath- 

 bun, and C. D. Walcott. 



Secretaries L,. O. Howard and F. A. L/ucas. 



Treasurer F. H. Knowlton. 



Members of Council F. W. True, T. H. Bean, R. E. C. 

 Stearns, Theobald Smith, and Geo. Vasey. 



ONE HUNDRED AND SEVENTY-FIRST MEETING, 

 January 26, 1891. 



(Eleventh" Anniversary Meeting.) 



The eleventh anniversary meeting was held in the law 

 lecture-room of Columbian University, January 26, 1891, 

 in the presence of members and invited guests. 



The President, Lester F. Ward, delivered his annual address 

 on the subject NEO-DARWINISM and NEO-L,AMARCKISM.* 



ONE HUNDRED AND SEVENTY-SECOND MEETING, 

 February 7, 1891. 



The President in the chair, and twenty-five members present. 



The President announced the following committees for the 

 ensuing year : 



Joint Commission C. Hart Merriam, Lester F. Ward, Rich 

 ard Rathbun. 



* Published in this volume. See pp. 11-71. 



