XLVIII BIOLOGICAL SOCIETY OF WASHINGTON. 



The Society then proceeded to ballot for the election of officers 

 for the ensuing year, with the following result : 



President -Dr. C. A. WHITE. 



Vice-Presidents Ur. W. H. BALL, Prof. L. F. WARD, Prof. 

 THEODORE GILL, Prof. C. V. RILEY. 



Secretaries Mr. G. BROWN GOODE, Mr. RICHARD RATHBUN. 



Treasurer Dr. TARLETON H. BEAN. 



Members of Council Prof. O. T. MASON, Dr. GEORGE VASEY, 

 Mr. F. W. TRUE, Dr. D. WEBSTER PRENTISS, Mr. JOHN A. RYDER. 



FIFTY-SIXTH MEETING, January 25, 1884. 



The Fourth Anniversary Meeting of the Society was held Janu 

 ary 25, on which occasion a large number of guests of the Society, 

 members of the Philosophical and Anthropological Societies, and 

 others, were present, by invitation, in the lecture-room of the National 

 Museum. Dr. White read the presidential address, the topic dis 

 cussed being CERTAIN PHASES IN THE GEOLOGICAL HISTORY OF 

 NORTH AMERICA, BIOLOGICALLY CONSIDERED,* and was listened to 

 with great pleasure and interest. The Presidents and Vice-Presi- 

 dents of the Philosophical and Anthropological Societies occupied 

 seats on the stage. The speaker was introduced by Dr. J. C. 

 Welling, President of the Philosophical Society. At the close of 

 the address a vote of thanks was moved by Major J. W. Powell, 

 President of the Anthropological Society. 



FIFTY-SEVENTH MEETING, February 8, 1884. 



The President occupied the chair. Thirty-six members were 

 present. 



* Proc. Biol. Soc. Washington, II, pp. 41-66, 1882-84. Extras printed, with 

 cover and title page, as follows : 



Certain Phases | in the | Geological History of the North American | Conti 

 nent, Biologically Considered. | By | Charles A. White, A. M., M. D., | Paleon 

 tologist to the U. S. Geological Survey, Honorary Curator of the Depart | ment of 

 Fossil Invertebrates in the U. S. National Museum. | Presidential address, [ 

 delivered at the | Fourth Anniversary Meeting of the Biological Society | of 

 Washington, January 25, 1884. j * * * | Washington : | Judd & Detweiler, 

 printers. | 1884. 8vo. 26 pp. 



