oo4 PROCEEDINGS OF THE AMERICAN ACADEMY. 



series CnHon, which together with the series poorer in hydrogen exphiins 

 the higher specific gravity of the crude oil and distillates prepared from 

 it. It is probable that series still poorer in hydrogen are contained in 

 the less volatile portions that cannot be distilled without decomposition. 



The following table gives a summary of the hydrocarbons described in 

 this paper with their boiling points and specific gravity at 20° : 



Hydrocarbons sepakated from Ohio Trenton Limestone Petkolecm. 



II. THE HYDROCARBOXS IN CANADIAN PETROLEUM WITH 

 HIGH BOILING POINTS. 



By Charles F. Mabery. 



In a former paper* the constituents of Canadian Corniferous limestone 

 petroleum distilling below 216° were described and were shown by 

 analysis and determination of molecular weights to belong to the series 

 CnH.2,,^.2, to the hydrocarbon C11H22 bdiling at 196°. The hydrocarbon 

 boiling at 216° was found to be C12H.24. Since several series have 

 appeared in Pennsylvania and Ohio Trenton limestone crude oil, it 

 seemed of interest to ascertain the series that form the main constituents 

 of Canadian petroleum in the portions with high boiling points. The 

 distillates separated as a part of the former work were available for 

 the study of the higher constituents. f Examination of the fraction 

 collected at 216° was repeated, and further results were obtained in 



* These Proceeilings. 32, 156 (1897). 



A A part of this work was performed hy Mr. E. T. Numsen, wlio selected it as 

 the subject of a tliesis for tlie degree of Bachelor of Science. 



