ANNOUNCEMENT OF MEETINGS OF THE ACADEMY AND 



AFFILIATED SOCIETIES 1 



Tuesday, February 20: The Anthropological Society, at the U. S. 

 National Museum, new building, Room 44, at 4.30 p.m. Program: 



1. M. Casanowicz: The fish in cult, myth, and symbol. 



Tuesday, February 20: The Historical Society, at the Shoreham, 15th 

 and H Streets, N. W., at 8 p.m. 



Tuesday, February 20: The Society of Engineers, at Rauscher's, 1034 

 Connecticut Ave., N. W., at 8 p.m. 



Wednesday, February 21: The Medical Society, at the Medical De- 

 partment of George Washington University, 1325 H Street, N. W., 

 at 8 p.m. 



Saturday, February 24 : The Biological Society, at the Cosmos Club, 

 at 8 p.m. 



Wednesday, February 28: The Geological Society, at the Cosmos 

 Club, at 8 p.m. 



Wednesday, February 28: The Medical Society, at the Medical De- 

 partment of George Washington University, 1325 H Street, N. W., 

 at 8 p.m. 



Saturday, March 3: The Philosophical Society, at the Cosmos Club, 

 at 8.15 p.m. Program: 



A. H. Pfcjxd (by invitation): The colors of mother-of-pearl. Illustrated. 25 

 minutes. 



W. F. Magqeks: Interference measurements of wave-lengths, and infra-red spec- 

 trum photography. Illustrated. 25 minutes. 



F. E. Fowle: Spectroscopic field light. Illustrated. 15 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. 



