1907.] MINUTES. 67 



Afternoon Scssioii. 

 Vice-President Barker in the Chair. 



The following papers were read : 



" The Progress of the Isthmian Canal," by Dr. Elihu Thom- 

 son, which was discussed by the Right Hon. James Bryce and 

 others. 



" The Production of Synthetic Alcohol," by Dr. Harvey W. 

 Wiley and Herman Schreiber. 



" The Princeton Archaeological Expedition to Syria," by How- 

 ard Crosby Butler, which was discussed by Prof. Hewett, Dr. 

 Heilprin and Dr. Butler. 



" On the Transportation Crisis," by Prof. Lewis M. Haupt. 



" The Association Theory of Solutions," by Prof. William F. 

 Magie. 



" The Groups which are Generated by two Operators of Order 

 Two and Four respectively, where Commutator is of order Two," 

 by Prof. G. A. IMiller. 



April 20. Morning Session. 

 Mce-President Scott in the Chair. 



The following papers were read: 



" Santa Cruz Typotheria," by W. J. Sinclair. 



'' The Stercornithes, or Fossil Birds of Patagonia," by Marcus 

 S. Farr. 



" Restorations of Santa Cruz ^Mammals," by Prof. William B. 

 Scott, which was discussed by Prof. E. S. IMorse. 



" Distribution of the Condensation Nuclei in Dustful Air, with 

 Remarks on the Methods of Counting Them," by Prof. Carl 

 Barus. 



" On the Temperature, Secular Cooling and Contraction of the 

 Earth, and on the Theory of Earthquakes held by the Ancients," 

 by Dr. T. J. J. See. 



Executive Session. 

 President Smith in the Chair. 

 The pending nominations for membership were read and the 

 Society proceeded to an election. 



