ANNOUNCEMENT OF MEETINGS OF THE ACADEMY AND 



AFFILIATED SOCIETIES.^ 



Saturday, May 22: The Philosophical Society, at the Cosmos Club, 

 at 8.15 p.m. Program: 



C. E. VAN Orstrand and F. P. Dewey: Preliminary report on the diffusion of 



solids. 25 minutes. 

 H. C. Dickinson and N. S. Osborne: The specific heat of ice at temperatures near 



the melting poiid. 20 minutes. 

 W. D. Lambert: An exact formula for theoretical gravity at the earth's surface. 

 10 minutes. 



Wednesday, May 26: The Medical Society, at the Medical Department 

 of George Washington University, at 8 p.m. 



Saturday, May 29: The Biological Society, at the Cosmos Club, at 

 8 p.m. 



»The programs ol the meetings of the affiliated societies will appear on this page if sent to th« 

 »ditors by the first and fifteenth days of each month. 



