MABERY. — SULPHUR PETROLEUMS. 57 



From the low percentage of hydrogen and higher percentage of 

 carbon it was evident that this oil still contained a small amount of 

 a hydrocarbon with less hydrogen, probably of the series C„H2„, 

 although the main constituent was evidently a member of the series 

 ^,J^2:i + 2' i" further attempts to eliminate the hydrocarbon with 

 less hydrogen, the remainder of the oil after analysis was treated sev- 

 eral times with hot nitric and sulpluiric acids, and boiled repeatedly 

 witli sodium until there was no residue left on distillation. Although 

 the boiling point was not materially changed by this treatment, analy- 

 sis showed a decrease in the percentage of carbon to 83.91 per cent, 

 and an increase in hydrogen to 16.10 per cent. 



As in the Ohio oil, we found that distillates collected with much 

 persistence between 120°-r26°; after the eleventh distillation, the 

 following weights were obtained : — 



120^-12P 12P-122= 122^-123' 123^24^ 124^-125= 125'=-126' 126=-127° 127°-128° 



Grams 85 70 80 60 30 30 70 60 



The quantities between 122°-125° were not greatly diminished after 

 the sixteenth distillation ; and, like the distillates from the Ohio oil, 

 these products contained small quantities of the aromatic compounds ; 

 they will receive further attention with reference to their chemical 

 reactions. After the twelfth distillation, 110 grams of an oil collected 

 at 126°-128°, bar. 752 mm., which was carefully purified in the man- 

 ner already described. It gave, by the method of Victor Meyer, a 

 vapor density corresponding to octane, CgPIis ; found, 4.24 ; required, 

 3.95. What has been said concernin<^ the presence of the octanes 

 in Ohio petroleum applies also to these distillates from Canadian oil, 

 and they evidently require further study. The fractions collected 

 at 130°-142° will be considered with the aromatic series. A distil- 

 late persisted at 145°— 146°, as shown by the quantities collected at 

 the twentieth distillation : — 



142^-143^ 143^-144= 144°-145' 145^-146° 146''-147= 147°-148° 



Grams 30 32 50 75 25 22 



Since the fractions 144°-146° resisted all attempts to separate 

 them into bodies with higher and lower boiling points, further study is 

 necessary to determine whether they represent an individual product. 



Between 149°-152°, 160 grams collected at the tenth distillation, a 

 large portion of which distilled constant at 150°-151°, bar. 749 mm. 

 After treatment with nitric acid and sodium, with results similar to 

 those observed in the Ohio oil, this product gave, in a vapor density 



