Proceedings of the American Academy of Arts and Sciences. 

 Vol. XLI. No. 5. — June, 1905. 



CONTRIBUTIONS FROM THE CHEMICAL LABORATORY OF 

 CASE SCHOOL OF APPLIED SCIENCE. — No. XLVI. 



ON THE COMPOSITION OF PETROLEUM. 

 By Charles F. Mabery. 



THE SULPHUR COMPOUNDS AND UNSATURATED HYDRO- 

 CARBONS IN CANADIAN PETROLEUM. — By Charles F. Mabery 

 and William 0. Qcayle. 



Aid in the Work described in this Paper was given bt the Academy from the 

 C. M. Warren Fond for Chemical Research. 



