CHEMICAL AND PHYSICAL PAPERS. 59 



It will be noticed that the carbon is neai'ly constant in the samples 

 examined, and that the hydrogen increases as the specific gravity de- 

 creases. This fact is usually accounted for by considering that the 

 heavier oils have become oxidized and contain oxygen. 



Determination of Sulfur. — Sulfur determinations have been made 

 on the same samples, showing an average of 0.27 per cent, sulfur. 



We have also made sulfur determinations in the oil from Lima, 

 Ohio. This oil gave 0.84 per cent, sulfur. This may be compared 

 with 0.81 reported by Mabery (Am. Chem. Jour., vol. 17, p. 727) for 

 an oil of the same specific gravity and an average of 0.59 per cent, for 

 the field. 



An oil sent to us, said to be from the Lucas gusher, of the Beau- 

 mont, Tex., field, gave us 1.89 per cent, sulfur, compared with 1.75 

 reported by Clifford Richardson. (Jour. Soc. Chem. Ind., vol. XX, p. 

 691.) 



The oil from Newcastle, Wyo., gave 0.38 per cent, sulfur. 



The low percentage of sulfur in the Kansas oil is of great impor- 

 tance to the refiner, as the sulfur compounds can be removed from 

 the refined oil without extra treatment. 



