CONSTITUENTS OF AMERICAN PETROLEUM. 



497 



Analysis of Butyl Hydride. 



Gas, 



After addition of oxygen, 

 After explosion, . 

 After absorption of COg, 



Observed 

 Volume. 



3504 

 326- 

 294-8 

 256-9 



Pressure. 



0-1944 M. 

 0-4810 

 0-4507 

 0-4215 



Temperature 

 Cent. 



5°C. 



4-8° C. 



4°C. 



9° C. 



Corrected vol. 



at 0°+l m. 



pressure. 



6-691 

 154-11 

 130-95 

 104-83 



Hence we have,- 



or, 



Gas. 



Condensation. 



Carbonic Acid 



■691 



23-16 



26-12 



•100 



346 



390 



Hydride of butyl requires — 



100 



350 



400 



The liquid collected between 6^ + 8° Cent, is not very different from this last. 

 It is, however, a mixture of hydride of amyl with hydride of butyl. Its sp. gr. 

 at 0' Cent, was found to be -6004. The vapour density was 2- 178, and the com- 

 position in the gaseous state is shown by the following numbers : — 



Observed 

 Volume. 



Gas, 15-3 



After oxygen, i 264-5 



After explosion, I 223 



After absorption, 166-8 



Pressure. 



0-4392 

 0-6912 

 0-6509 

 0-6154 



Temperature 

 Cent. 



Corrected vol. 



at 0°4-l m. 



pressure. 



19-3 

 19-3 

 17-9 

 19-5 



9-39 

 185-22 

 149-12 

 106-78 



Hence we have, — 



Gas. 



Condensation. 



Carbonic Acid 



9-39 



: 36-10 : 



42-34 



100 



: 384 



450 



or, 



Hydride of butyl requires, — 



100 : 350 400 



It was not to be expected, from the manner in which the gases were collected, 

 that any single portion would correspond exactly in composition with any member 

 of the series, and some attempts which were made to separate the gases from 



