MABERY AND KITTELBERGER. — S. A. PETROLEUM. 187 



were collected from 14.5 kilos, after the fourth distillation. It cannot 

 be assumed that the absence of more volatile constituents was the result 

 of evaporation by exposure on the surface of the water where the oil 

 was found, since it was collected as soon as it appeared. No doubt such 

 volatile portions as constitute gasoline on long exposure under such cir- 

 cumstances would be lost, but not constituents such as higher members 

 of the series C„H.2„+2, which do not appear in this oil. 



—130= 130^-135° 135°-140^ 140='-loO° 150°- 155^ 155°-160° 160°-165° 



Grams 265 100 115 225 200 65 95 



Sp. gr. 0.8706 0.8736 0.8747 



165°-170° 170°-175° ITSO-ISO^ 180°-185° 185°-190° 190°-195° 



Grams 130 130 70 125 115 155 



Sp. gr. 0.8784 0.8806 0.8846 0.8858 0.8867 0.8884 



195^-200' 200°-205° 205°-210° 210°-215° 215°-220° 220°-225° 



Grams 140 165 95 110 100 145 

 Sp. gr. 0.8926 0.8947 0.8964 0.8989 0.9020 0.9045 



22o°-230° 230^-235^ 235^-240° 240°-245° 245°-250=' +250 



Grams 145 150 100 93 75 130 



Sp. gr. 0.9078 0.9113 0.9137 



Distillation of the fractions below 150° amounting to 700 grams was 

 continued under atmospheric pressure, collecting within the limits of 

 two degrees. After five distillations, ten in all from the beginning, 

 heaps collected at 170°, 190°, and 212°, although in small quantities. 

 The distillation could not be pushed too far on account of decomposition. 

 The fraction 170°-172° (730 mm.) gave the following percentages of 

 carbon and hydrogen : — 



0.1456 grams of the oil gave 0.4556 gram CO2, and 0.1864 gram H2O. 



Calculated for CioHoq- Found. 



C 85.71 85.33 



H 14.29 14.23 



Unfortunately there was not enough of this fraction to determine its 

 specific gravity. A determination of sulphur gave 0.05 per cent. Its 

 bromine absorption was found to be 3.5 per cent. No other heap appeared 

 in the distillates below 190°. At 190°-192° more collected, evidently 

 corresponding to a hydrocarbon boiling at 196°. A determination of the 

 specific gravity of this distillate gave 0.8331. It absorbed bromine 



