ANNOUNCEMENT OF MEETINGS OF THE ACADEMY AND 



AFFILIATED SOCIETIES.^ 



Thursday, February 4: The Entomological Society, at the Saenger- 

 bund Hall, at 8 p. m. Program: 



M. E. McIndo: On the reflex bleeding of the Coccinellid beetle Eihilachna borealis. 



J. B. Parker: Notes on the nesting habits of some solitary wasps. 



W. F. Fisher: One new genus, and two hew species of Cerambycidae., 



August Busek: Description of new North American Microlepidoptera, 



^A.. N. Caudell: Rhabdoblatta brunneonigra. A new cockroach from China. 



W. R. Walton: A revision of the genus Exoriptoides Coquileti. 



Saturday, February 6: The Biological Society, at the Cosmos Club, 

 at 8 p. m. 



Wednesday, February 10: The Geological Society, at the Cosmos Club, 

 at 8 p. m. Program: 



G. R. Mansfield : Origin of the Permian phosphates of the western field. ^ 



F. C. Schrader: Some features of ore deposits in the Santa Rita and Paiagonia 



Mountains, Arizona. * 



F. E. Matthes: Studies in glacial cirques in the Sierra Nevada. (Illustrated). 



Wednesday, February 10: The Medical Society, at the Medical De- 

 partment of George Washington University, at 8 p. m. 



Thursday, February 11: The Chemical Society, at the Cosmos Club, 

 at 8. p. m. Program: 



Fred E. Wright (by invitation) : The petrographic microscope in analysis. 



(Illustrated). 

 L. H. Adams: Application of the interferometer to the quantitative analysis of 



solutions. {Illustrated). 



Saturday, February 13 : The Philosophical Society, at the Cosmos Club, 

 at 8.15 p. m. Program: 



F. B. Littell: Washington-Paris longitude by radio-signals. 

 A. J. Lotka: E^iciency as a factor in organic evolution. 



Tuesday, February 16: The Anthropological Society, at the Public 

 Library, at 8 p. m. 



Tuesday, February 16: The Washington Society of Engineers, at the 

 Cosmos Club, at 8 p. m. Program: 



Capt. William Mitchell of the General Staff, U. S. A. : Military organizaiion 

 of the present day and its relation to Engineering. '- ■ 



« The programs of the meetings of tho affiliated societies will appear on this page If sent to the 

 editors by the lirst and fifteenth days of each month. 



