OFFICERS OF THE ACADEMY 



President: Carl, L. Alsberg, Bureau of Chemistry. 

 Corresponding Secretary: Robert B. Sosman, Geophysical Laboratory. 

 Recording Secretary: William R. Maxon, National Museum. 

 Treasurer: R, L. Faris, Coast and Geodetic Survey. 



ANNOUNCEMENT OF MEETINGS OF THE ACADEMY AND 



AFFILIATED SOCIETIES^ 



Thursday, February ig. Joint meeting of the Academy with the 



Geological Society, at the Cosmos Club, at 8.15 p.m. Program: 

 ALFRED H. Brooks: The application of geology to war. 



Friday, February 20. The Biological Society, at the Cosmos Club, 

 at 8.00 p.m. 



Wednesday, February 25. The Geological Society, at the Cosmos 

 Club, at 8.00 p.m. 



Thursday, February 26. The Chemical Society, at the Cosmos Club, 

 at 8.00 p.m. 



Saturday, February 2^. The Philosophical Society, at the Cosmos 



Club, at 8.15 p.m. Program: 

 E. D. Williamson: Elastic properties of the earth. 

 L. H. Adams: The nature of the interior of the earth. 

 C. G. Peters: Calibration of precision end standards. 



■The programs of the meetings of the afiSIiated societies will appear on this page if sent to the 

 Editors by the thirteenth and twenty-seventh of the month. 



