BIOLlMilCAI. SOCIKTV ()!' WASHINGTON'. 



Secretaries. F. A. Lucas, and L. O. Howard. 



Treasurer. F. H. Knowlton. 



Additional Members of the Council. C. I). Walcott F. \V. 

 True, Dr. T. H. Bean, Dr. Geo. Vasey, and Dr. R. E. C. 

 Stearns. 



ONE HUNDRED AND FIFTY-FOURTH MKKTIXC,. 



January 24, 1890. 

 (Tenth Anniversary Meeting.) 



The tenth anniversary meeting was held in the law lecture 

 room of Columbian University, January 24, 1890; one hun 

 dred and three members and guests present. 



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

 on the subject THE COURSE OF BIOLOGIC EVOLUTION.* 



* Published in this volume. See p. 23. 



