4 The Franklin Bi-Centennial 



Wednesday, April i8th 



In the Hall of the Society 



on Independence Square 



Meeting for the reading of papers on Subjects of Science 



Morning Session id A. M. 



The Statistical Method in Chemical Geology 



By Frank Wigglesworth Clarke, Sc.D., of Washington 



On a possible Reversal of the Deep Sea Circulation and 

 its Effect on Geological Climates 



By Prof. Thomas C. Chamberlin, of Chicago 



Elementary Species in Agriculture 



By Prof. Hugo deVries, of Amsterdam, Holland 



An International Southern Observatory 



By Prof. Edward C. Pickering, of Cambridge, Mass. 



The Figure and Stability of a Liquid Satellite 



By Sir George Darwin, K.C.B., F.R.S., of Cambridge, 

 England 



Form Analysis 



By Prof. Albert A. Michelson, of Chicago 



Executive Session — 12.30 o'clock 

 For the transaction of the private business of the Society 



Stated Business — Candidates for membership 

 balloted for 



