/ 



PROCEEDINGS 



OF THE 



American Philosophical Society 



HELD AT PHILADELPHIA 



FOR PROMOTING USEFUL KNOWLEDGE 



Vol. LII. 



May-August, 191 3. 



No. 210. 



// 





CONTENTS 



The Alleghenian Divide, and its Influence upon tl 



Fauna. By Arnold E. Ortmann '- 28^7 



The Relation between the Physical State of Brain Cells and Brain 



Functions— Experimental and Clinical. By Geo. W. Crile - 397 

 Radiated and Received Energy in Radiotelegraphy. By L. W. Austin 407 

 Elimination and Neutralization of Toxic Soil Substances. By Oswald 



SCHREINER - ^^° 



PHILADELPHIA 

 THE AMERICAN PHILOSOPHICAL S 

 104 South Fifth Street 



