ANNOUNCEMENTS OF MEETINGS OF THE ACADEMY AND 



AFFILIATED SOCIETIES 



Wednesday, October 19. The Society of Engineers, at The Cosmos Club, 

 at S.15 p.m. Program: 



William Bowie; The work of the Coast and Geodetic Survey in relation to engi- 

 neering activities. 



Thursday, October 20. The Academy, at the Pubhc Library, at <S.L5 p.m. 

 Program : 

 Discussion and inspection of the Academy's One hundred popular books in 

 science, and of books proposed for a list of information-manuals. 



Saturday, October 22. The Philosophical Society, at the Cosmos Club, 

 at 8.15 p.m. Program: 

 H. H. Kimball: Sky brightness and daylight illumination measurements. 

 D. R. Harper, 3d: The mathematical equations for heat conduction in the fins of air- 

 cooled engines. 



Tuesday, October 25. The Chemical Society, at the National Museum, at 

 8.15 p.m. Program: 

 Presentation of a portrait of Joseph Priestley, the discoverer of oxygen, to the 



National Museum. 

 Edgar F. Smith: Some remarks on the history of chemistry in the United States. 



F. W. Clarke: The organization meeting of the American Chemical Society at the home 

 of Priestley. 



Wednesday, October 26. The Geological Society, at the Cosmos Club, 

 at 8 p.m. , Program: 



J. B. Eby: Structural geology of Wise County, Virginia. 



G. R. Mansfield: Structure of the Teton Coal Field, Idaho. 

 H. S. Washington: The granites of Washingtoti, D. C. 



Saturday, October 29. The Biological Society. 

 Tuesday, November 1. The Botanical Society. 

 Wednesday, November 2. The Society of Engineers. 

 Thursday, November 3. The Entomological Society. 



