PROCEEDINGS 



OF THE 



AMEHICAN ACADEMY 



OF 



ARTS AND SCIENCES. 



VOL. XXXI. 

 PAPERS READ BEFORE THE ACADEMY, 



Aid in the work desoribed in this Paper was given by the Academy from the 

 C. M. Warren Fond for Chemical Research. 



I. 



CONTRIBUTION FROM THE CHEMICAL LABORATORY OF 

 CASE SCHOOL OF APPLIED SCIENCE. 



XX. — ON THE COMPOSITION OF THE OHIO AND 

 CANADIAN SULPHUR PETROLEUMS. 



By Charles F. Mabery. 



Presented October 10, 1894. 



Notwithstanding the great number of investigations that have 

 been undertaken on petroleums from different countries, our knowl- 

 edge of their composition, especially of the portions with high boiling 

 points, is still incomplete. What is known concerning American 

 petroleums is based chiefly on the results of investigations which were 

 carried on thirty years ago, before the discovery of several series of 

 organic compounds, since shown to be contained in certain petroleums. 

 With these facts in view, and having found in the study of the sulphur 

 compounds from Ohio and Canadian petroleums that these oils are in 

 certain respects peculiar in their composition, I have undertaken a 

 comprehensive examination of them with reference to the different 

 series of products which they may be found to contain. The study of 

 Ohio petroleum seemed especially inviting on account of its origin in 

 the Trenton limestone, a new horizon for a prolific oil supply, and 

 its associations with animal remains in the oldest geological forraa- 



VOL. XXXI. (n. s. xxiii.) 1 



