Programme for Wednesday 5 



Afternoon Session — 2 o'clock 



The Present Position of the Problem concerning the 

 First Principles of Scientific Theory 



By Prof. Josiah Royce, of Cambridge, Mass. 



The Human Harvest 



By President David Starr Jordan, of Stanford University, 

 Cal. 



On Positive and Negative Electrons 



By Prof. H. A. Lorentz, of Amsterdam 



The Elimination of Velocity-Head in the Measurements 

 of Pressures in a Fluid Stream 



By Prof. Francis E. Nipher, of St. Louis. 



Old Weather Records and Franklin as a Meteorologist 

 By Prof. Cleveland Abbe, of Washington. 



Was Lewis Evans or Benjamin Franklin the first to rec- 

 ognize that our North-east Storms come from the 

 South-w^est? 



By Prof. William Morris Davis, of Cambridge, Mass. 



Notes on the Production of Optical Planes of large 

 Dimensions 



By Dr. John A. Brashear, of Allegheny, Pa. 



A new Mountain Observatory 



By Prof. George E. Hale, Pasadena, Cal. 



