X MINUTES. [April 22, 



in the south polar regions has been dormant. Now many scientific 

 men and societies are awake and interested. Let us hope this inter- 

 est will grow and, perhaps, in the years to come, lead to the gather- 

 ing of more scientific and geographic data about the still unknown 

 south, and to the sending of an American expedition to Wilkes Land, 

 to explore it and establish beyond question the geographical dis- 

 coveries reported by Lieutenant Wilkes, in command of the U. S. 

 Exploring Expedition of 1838-1843. It would seem wise to con- 

 tinue the committee with instructions to prepare a renewed applica- 

 tion to the Government and continue the dissemination of interest 

 in this great undertaking. 



The report was accepted and the Committee continued. 



Morning Session, 10.05 o'clock. 



William W. Keen, M.D., LL.D., President, in the Chair. 

 The following papers were read : 



" Physical Notes on Meteor Crater, Arizona," by William F. 

 Magie, Professor of Physics at Princeton University. 



" The Conversion of the Energy of Carbon into Electrical 

 Energy on Solution in Iron," by Paul R. Heyl, Assistant 

 Professor of Physics in the Central High School, Philadel- 

 phia. (Introduced by Prof. Harry F. Keller.) 



" The One Fluid Theory of Electricity," by Francis E. 

 Nipher, Professor of Physics in Washington University, St. 

 Louis. 



" The Past and Present Status of the Ether," by Arthur Gor- 

 don Webster, Professor of Physics at Clark University, 

 Worcester. 



" The Ether Drift," by Augustus Trowbridge, Professor of 

 Physics at Princeton University. 



" The Effects of Temperature on Fluorescence and Phosphores- 

 cence," by E. L. Nichols, Professor of Physics at Cornell 

 University, Ithaca. 



" Infra-red and Ultra-violet Landscapes." 



" New Optical Properties of Mercury Vapor." 



