Proceedings of the American Academy of Arts and Sciences. 

 Vol. XXXIL No. G. — January, 1897. 



CONTRIBUTIONS FROM THE CHEMICAL LABORATORY 

 OF THE CASE SCHOOL OF APPLIED SCIENCE. 



INVESTIGATIONS ON A3IER1CAN PETROLEUM, 

 By Charles F. Mabery. 



XXVII. — THE CONSTITUENTS OF PENNSYLVANIA, 

 OHIO, AND CANADIAN PETROLEUM BETWEEN 

 150° AND 220°. 



By Charles F. Mabery. 



Aid in the wore described is this Paper was given by the Academy from the C. M. Warren 



Fond for Chejiical Research. 



