THE AFFILIATED SOCIETIES 



OF THE 



WASHINGTON ACADEMY OF SCIENCES 



The Anthropological Society of Washington. 



The Washington Society of the Archaeological Institute of 



America. 

 The Biological Society of Washington. 

 The Botanical Society of Washington. 

 The Chemical Society of Washington. 

 The Washington Society of Engineers. 

 The Entomological Society of Washington. 

 The Society of American Foresters. 

 The National Geographic Society. 

 The Geological Society of Washington. 

 The Columbia Historical Society. 

 The Medical Society of the District of Columbia. 

 The< Philosophical Society of Washington. 



ANNOUNCEMENTS 



The Washington Academy of Sciences will hold an exhibit on the 

 evening of Thursday, March 28, 1912, at the New National Museum, to 

 which the members of the Affiliated Societies and their friends are invited. 



It is intended to exhibit at this meeting new apparatus, methods, 

 and results from various government bureaus and other scientific insti- 

 tutions of Washington. - Arrangements will be made to have some of 

 the apparatus in operation. Much of this apparatus is of special inter- 

 est and is but little known outside of the institutions where it is in use, 

 and will be here exhibited for the first time. 



The Chemical Society of Washington will hold a special meeting at 

 the Cosmos Club, Friday Evening March 22, when Dr. A. M. Comey 

 will lecture on The testing of explosives. 



