CONSTITUENTS OF AMERICAN PETROLEUM. 



495 



Gas, 



After addition of oxygen, . 

 After addition of air, . . 

 After explosion, .... 

 After absorption, . . 

 After addition of hydrogen, 

 After explosion 



Observed 

 Volume. 



43-034 

 151-465 

 417- 

 372-644 

 321- 

 405- 

 353-032 



Pressure. 



0-2821 



0-3857 



0-6439 



0-6038 



0-566 



0-649 



0-5846 



Temp. Cent. 



19-5 



19-9 



20-6 



16-7 



15-2 



17- 



15-2 



Corrected vol. 



at 0° +1 m. 



pressure. 



11-335 

 54-454 

 249-70 

 212-05 

 172-11 

 247-45 

 195-52 



The relation here of hydrocarbon to condensation and carbonic acid is as — 



11-335 

 100 



37-65 

 332 



39-94 

 352 



The oxygen consumed is 5-88 times the volume of gas burned, while hydride 

 of butyl alone requires 6*5 times its volume of oxygen for combustion. 



The gas evolved oil warming the light spirit of petroleum, as it is prepared 

 for sale, after having been kept, however, for some months in a vessel not her- 

 metically sealed, was found to be a mixture of nitrogen and oxygen, with nearly 

 pure hydride of butyl. 



After separating by potash the carbonic acid which had been allowed to occupy 

 the space above the liquid, the gas was analysed ; the oxygen which it contained 

 was estimated by pyrogallate of potash in a separate experiment, and amounted 

 to 15 3 7 per cent. 



Gas, 



After addition of air, . 

 After addition of oxygen, . 

 After explosion, .... 

 After absorption, 

 After admission of hydrogen. 

 After explosion 



Observed 

 Volume. 



73-2 

 2733 

 334- 

 288-5 

 228-5 

 330- 

 317-5 



Pressure. 



0-2399 

 0-4366 

 0-4976 

 0-4523 

 0-3995 

 0-5022 

 0-4799 



Temp. Cent. 



7- 

 5-2 

 5-7 

 6-4 



10-2 



13- 



12-2 



Corrected vol. 

 at 0° 4- Im. 



pressure. 



17-25 

 117-11 

 162-82 

 127-5 



87-998 

 158-2 

 145-86 



Deducting the nitrogen and oxygen contained in the gas, we have here a rela- 

 tion of hydrocarbon to condensation and carbonic acid as, — 



9-64 



100 

 VOL. XXIII. PART III. 



35-32 

 366 



39-502, or as 

 409 



6s 



I 



