174 
calculation for the body of the probable formula C,H, in the Ist Series from petro- 
leum. It is obvious, however, that these are merely accidental circumstances, to which 
no importance can attach. 
Or tHe CatcuLaTep Borrne-porsts or Hyprocarsons By Loéwie’s THeory, viz. THAT ONE 
Arom or Carpon (C) RalsEs THE Bortine-porst 38°.4, anp Oxe Atom or Hyprogen 
(H) Lowers rr 29°.2. 
RESEARCHES ON THE VOLATILE HYDROCARBONS. 
Hydrocarbons from Pennsylvania Petroleum. 
lst SERIES. 
De eee Calculated Boiling- Difference between 
ee Becca a ( 
fe} [9] °o 
C,H» 0.0 (?) 15.2 
Co He 80.2 33.6 3.4 
GAY 61.3 52.0 9.3 
OR SES 90.4 70.4 20.0 
16 Hig 119.5 88.8 30.7 
48 150.8 107.2 43.6 
2p SERIES.* 
e < Calculated Boiling- | ° Difference between 
Seale Bolling pont. | Ponty Uéwig's|Calclate and Deter 
coe 8.9 15.2 6.7 
aie 37.0 33.6 "3.4 
a ne 68.5 52.0 16.5 
a His 98.1 70.4 277 
1s Hhs 127.6 88.8 38.8 
3p Series. (Wot yet completed.) 
Del ined Calculated Boiling- Difference between 
Formals Botogpone | PNY Let |calaaed and Der 
Cx Hay 1749 184.0 | 10.9 
CH 195.8 202.4 6.6 
C., Hye 216.2 220.8 | 4.6 
A cursory examination of the last three tables will suffice to show that, so far as 
regards the hydrocarbons of the formule C, H, and C,H, 42, the theory of Léwig also 
has no foundation in fact. That his theory did not hold good with the hydrocarbons 
of the formula C, H,_, was observed by Lowig himself, who found that it would place 
the boiling-point of benzole at 285°.6, i. e. 205° above its actual boiling-point. 
* See foot-note on page 167. 
