Vol. XXV, pp. vii-xii January 18, 1913 



PROCEEDINGS 



OK THE 



BIOLOGICAL SOCIETY OF WASHINGTON 



PROCEEDINGS. 



The Society meets in the Assembly Hall of the Cosmos Club 

 on alternate Saturdays at 8 p. m. 



» 



January 6, 1912 — 491st Meeting. 



President E. W. Nelson in the chair and 38 persons present. 



The program for the evening was a discussion on the subject, 

 ' Recent Environmental Changes and Relative Biogenic Sta- 

 bility,'' led by David White and participated in by J. W. 

 Gidley, Paul Bartsch, C. A. Davis, A. D. Hopkins, E. W. 

 Nelson, \Vm. Palmer and others. 



January 20, 1912— 492d Meeting. 



President E. W. Nelson in the chair and 93 persons present. 



T. S. Palmer announced that three additional bird reserva- 

 tions had recently been set aside by executive order of President 

 Taft, making the present total number of such reservations 55. 



\V. P. Hay exhibited by lantern slides two photographs of a 

 water spout observed by him last summer on the coast of North 

 Carolina. 



The following communications were presented: 

 ' Elk Herds in Jackson Hole, Wyoming": E. "A. Preble. 



"A Naturalist among the Igo rotes of the Philippine Islands": 

 II. V. Harlan. 



February 3, 1912 -493d Meeting. 



Vice-President J. N. Pose in the chair and 56 persons present. 



Paul Bartsch spoke briefly of the fauna! barrier to fresh water 



organisms presented by the muddy waters of the Missouri River. 



(vii) 



