174 



RESEARCHES ON THE VOLATILE HYDROCARBONS 



leum 



ion for the body of the probable formula C 8 H 10 in the 1st Series from petro- 

 It is obvious, however, that these are merely accidental circumstances, to which 



no importance can attach. 



Of the Calculated Boiling-points of Hydrocarbons by Lowig's Theory, viz. that One 



Atom 



of Carbon (C) 

 (H) lowers it 29°.2. 



Boiling 



38°.4, and One Atom 



Hydrogen 



Hydrocarbons from Pennsylvania Petroleum. 



1st Series. 



Formula, 



CgHio 

 C12 H 14 



C 1 6 H 18 



^18 "20 



Formula. (?) 



C 8 H l0 

 C12 H 14 

 C16 H 18 



Determined 

 Boiling-point. 



o 



0.0 



30.2 



61.3 



90.4 



119.5 



150.8 



(?) 



Calculated Boiling- 

 point by Lowig's 

 theory. 



15.2 

 33.6 

 52.0 

 70.4 

 88.8 

 107.2 



2d Series.* 



Determined 

 Boiling-point 



o 



8-9 

 37.0 

 68.5 

 98.1 



127.6 



Calculated Boiling- 

 point by Lowig's 

 theory. 



15.2 

 33.6 

 52.0 



70.4 

 88.8 



Difference between 



Calculated and Deter 



mined Boiling-point. 



3.4 



9.3 



20.0 



30.7 

 43.6 



Difference between 

 Calculated and Deter- 

 mined Boiling-point. 



o 



6.7 



3.4 

 16.5 

 27.7 



38.8 



Formula, 



3d Series. {Not yet completed.) 



Determined 

 Boiling-point, 



174.9 

 195.8 

 216.2 



Calculated Boiling- 

 point by Lowig's 

 theory. 



184°0 

 202.4 

 220.8 



Difference between 

 Calculated and Deter- 

 mined Boiling-point. 



A cursory examination of the last three tables will suffice to show that, so far 



regards the hydrocarbons of the formulae C„ H„ and C„ II 

 has no foundation in fact. 



n + 2 



eory of Lo 



of the formula C n H n 



That his theory did not hold good with the hydrocarbo 

 observed by Lowig himself, who found that it would pla 



boiling-point of benzole at 285°.6, i. e. 205° above its actual boiling-point 



* See foot-note on page 167. 



