ANNOUNCEMENT OF MEETINGS OF THE ACADEMY AND 



AFFILIATED SOCIETIES 1 



Tuesday, March 6: The Anthropological Society, at the Public Library, 

 at 8 p.m. 



Tuesday, March 6: The Society of Engineers, at Rauscher's, 1034 

 Connecticut Ave. N.W., at 8 p.m. William A. Mitchell, Major in 

 Corps of Engineers, U. S. Army, will give a lecture on Aeronautics, 

 illustrated by lantern slides. 



Saturday, March 10: The Biological Society, at the Cosmos Club, at 

 8 p.m. 



Wednesday, March 14: The Geological Society, at the Cosmos Club, 

 at 8 p.m. Program: 



Harry Fieldixg Reid: Distribution of land and water on the earth. 

 William Bowie : Some results of recent gravity observations by the Coast and Geo- 

 detic Survey. 

 David White : Discussion of gravity anomalies from the stratigraphic standpoint. 



Wednesday, March 14: The Botanical Society, at the. Ebbitt House. 

 The annual dinner, followed by the address of the retiring President, 

 A. S. Hitchcock. 



Saturday, March 17: The Philosophical Society, at the Cosmos Club, 

 at 8.15 p.m. Program: 



W. Bowie: Our present knowledge of isostasy (illustrated) . 30 minutes. 

 W. F. G. Swann: The origin and maintenance of the earth's electric charge (illus- 

 trated). 30 minutes. 



1 The programs of the meetings of the affiliated societies will appear on this page if sent to the editor 

 by the thirteenth and twenty-seventh day of each month. 



