186 PROCEEDINGS OP THE AMERICAN ACADEMY. 



The crude oil gave as its specific gravity 0.9480 at 20°. It is a 

 high sulpliur oil, as shown by the followiug determinations : (I.), 0.70; 

 (II.), 0.66 per cent. It absorbed bromine equivalent to 12.09 per cent. 

 It also contains a large quantity of nitrogen, as shown by the following 

 determinations: (I.), 0.321 ; (II.), 0.315 per cent. A determination of 

 ash in the crude oil was made, in which 29.1360 grams of the oil was 

 burned, and the ash ignited until all carbon was consumed. The residue 

 weighed 0.313 gram, equivalent to 0.011 per cent, or the same amount 

 of ash as is obtained from Ohio crude oil.* The ash contains much iron, 

 as shown by its brown color. 



Determinations of carbon and hydrogen in the crude oil gave the 

 following results : — 



I. II. 



C 85.80 85.45 



H 12.02 11.79 



The crude oil was dark in color, thick and viscous, flowing very 

 slowly at ordinary temperatures. In attempting to distil it under ordi- 

 nary atmospheric pressure, nothing came over below 260°, and between 

 this point and 345° it distilled in the following proportions, beginning 

 with 290 c.c. : — 



—310° 310°-345° 



70 c.c. 70 CO. 



Specific gravity, 0.8749 0.8615 



Bromine absorption, 8.46 34.96 



As the great increase in bromine absorption shows, the distillate 

 310°-345° was badly cracked, and it had the very disagreeable odor of 

 the worst decomposition products of high petroleum distillates. The 

 lower fraction had only the natural odor of an uudecomposed distillate. 

 Nothing could be distilled above 345°, and the residue was completely 

 coked. In respect to the instability of its least volatile portions, this oil 

 diff'ers from any North American oil that has come under my obser- 

 vation (Mabery). It was therefore evident that another method of 

 distillation must be resorted to with any hope of separating without de- 

 composition the principal constituents. 



In subjecting the crude oil to distillation in vacuo under 50 mm., the 

 first distillate came over at 100°, and below 250° the followinfr weights 



* Proc. Amer. Acad., XXXI. 20. 



