UNIVERSITY OF VIKGINIA PUBLICATIONS 



BULLETIN 



PHILOSOPHICAL SOCIETY 



Scientific Series, Vol. 1, iS^o. IS, pp. 363-871, February, 191d 



The Association of Vanaditiia witli Petroleum and 

 Asphalt 



BY 



E. M. BIRD AND W. S. CALCOTT 



TJNIVEKSITY OF VIKGINIA 



Charlottesville, Virginia, tr. S. A. ' OfUan 'f)Sfiin7>\_ 



APR R ■/.■ ) 



