■ MABERY. — SULPHUR PETROLEUMS. 49 



residue above 350° is mucli larger than in the oils from other fields. 

 As will appear later, this difference is much less in distillations con- 

 ducted 171 vacuo. 



The percentage of sulphur was determined in each distillate by a 

 combustion in air : — 



Sulphur 



Determinations of the quantity of bromine absorbed indicated a 

 greater capacity for absorption in the higher fractions, but less in the 

 residue than in corresponding fractions from the Ohio oil : — 



Canada. Ohio. 



+ 350° 17.8 +330° 19.50 



The Oil Springs oil differs essentially in many respects from Petro- 

 lia oil, especially in its lower specific gravity, lower percentage of sul- 

 phur, and in the proportions in which it distils at different temperatures. 

 In certain peculiarities it approaches Ohio oil. The lower fractions 

 show a higher bromine absorption than either the Petrolia or the Ohio 

 oil: — 



Per cent of 

 Bromine absorbed. 



—100° 0.0 



100°-150° 2.31 



150°-200° 4.09 

 200°-250° 8.98 



250°-300° 8.41 



300°-350° 12.00 



+ 350° 33.78 



The percentage of bromine absorbed by the crude oils was also 

 determined : — 



