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^ 



Tuesday, April 6. The Anthropological Society. 



Tuesday, April 6. The Botanical Society, at the Cosmos Club at 



8.00 p.m. Program. 

 A. S. Hitchcock: A botanical trip to British Guiana. 



Wednesday, April 7- The Society of Engineers, at the Cosmos Club, 



at 8.15 p.m. Program: 

 N. C. GrovER: The future of hydraelectric power. 



Thursday, April 8. The Chemical Society, at the Cosmos Club, 



at 8.00 p.m. Program: 

 C. E. Mangels: Food dehydration. 

 J. M. Dorn: Industrial alcohol. 



Saturday, April 10. The Philosophical Society, at the Cosmos Club, 



at 8.15 p.m. Program: 

 H. C. Dickinson: Physical laboratory methods applied to aircraft engine performance 



at high altitudes. 

 M. D. Hersey: Old and new problems of aeronautic instruments. 



Tuesday, April 13. American Institute of Electrical Engineers, 

 Washington Section. 



Wednesday, April 14. The Geological Society, at the Cosmos Club, 



at 8.00 p.m. Program: 

 A. E. Path: Fault systems in the mid-continent field in Oklahoma. 

 J. B. Mertie, Jr.: The Salt Chuck palladium mine near Kasaan, Alaska. 

 Arthur Keith; Structure of the Taconic Range in Vermont. 



Thursday, April 15. The Academy, at the Cosmos Club, at 



8.15 p.m. Program: 

 Vernon Kellogg: Europe's food in war and armistice. 



Saturday, April 17. The Biological Society, at the Cosmos Club. 



>The prosramt of the meetings of the affiliated societies will appear on this page if seat to tb« 

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



