A 
a 
a 
ay 
C. M. Warren on the Volatile Hydrocarbons. 385 
2. Hydrocarbons from Coal-tar Naphtha. 
. Caleulated boiling-| Difference between 
aaae of substance.| Formula. Ry ae poise point b ee ey eae —— 
. 0 ° oe eee 
| Benzole, CioH, 80-0 80 0-0 
| Toluole, Oo,He 110°3 100 10°3 
| Xylole, Oreuis 139°8 120 19°8 
- Isoeumole, Ciehis 169-9 140 29'8 
3. The Homologous Hydrocarbons from Oil of Cumin and Cuminic 
Acid. 
Calculated boiling- | Difference between 
Determined |. Ig le : = 
Name of substance. Formula. boiling-point. point <| Pe seaed 8 ween for Boers 
” : oo. ° ° 
Cumole, B23 F8: Pe "151-1 140 lil 
Cymole, On, As 179°6 160 19°6 
1st Series from petroleum. It is obvious, however, that these 
are merely accidental circumstances, to which no importance can 
attach. 
= 7 
Or r&z Catcutatep Bomtse-rorxts or Hyprocarsoys By Lowie's 
Tueory, viz. raar One Atom or Carson 0) RAISES THE Bornes 
Point 38°-4, anp Onze Arom or HyproGEN (H) Lowers rr 29°°2, 
Hydrocarbons from Pennsylvania Petroleum. 
Ist SeRtes. « 
se  trepiarmataiel | Calculated boiling- | Difference between 
a a 
o 
H, 0:0 (2) 15°2 
Tee 30 ( 33°6 34 
16. 12 : - 
H 61°3 52°0 9°3 
oH: a 70rd 200 
: He 8:8 1 
ae 119°5 8 
Heo + 5808 107-2 43-6 
WER eT Lio PSO 5 wee ar 
