C. M. Warren on the Volatile Hydrocarbons. ee 
2. Of the Hydrocarbons obtained from Albert coal. 2 
Ist sertes. (Not completed.) 
Difference of | Runge of temperature 
a1: A Elementar ie A eh : 
Formula. Boiling-point. y. boiling-point | within which the sub- 
oes ee Gumi stance would.all distil. 
° ° ° 
C, yy 2 
a a 59°9 C,H, 15 
: C8 90°6 0,8; 30°7 05 ee 
: 0 Hig 1197 C2H, aor 4 0°5 ae 
The average — ot in this series, for the addition of | 
2H,, is, therefore, 
2p series. (Not completed.)*” 
oie SS RO Se aT 
: Formula. (2) Boiling-point. oo y bolling-point | : within whet ¥ : 
: Re ee | ee i , ? 
| C,oH,, : : : 
Cush 68-0 C,H, , 10 
: oe Cals. 98°5 Cs i, 30°5 0°6 
he Cicely, 12571 CH, bi 
}+2—28°6 
Average boiling-point ict icons = 28°'6. 
et difference == 206. ae 
3. Of Hydrocarbons obtained Jrom Coal-tar Naphtha. 
PRES SN Rath - . |Elementary | Difference of | Range of temperature 
Ni uostance.| Formula. |Boiling-point. ddlicdace: sca winter irda, 
oO 
Benzole, (C calle 80-0 z 0'8 
Toluole, C,H, | 1103 C,H, | 30:8 07 
Xylole, CieH,o) 139°8 | C,H, | 295 0-4 
Isocumole, |C,,H, 5! 169-9 C,H, ! 30-1 10 
ge ji i 8y°9 
cae of boiling-point for the addition of C,H,=89°9 
ee 
4. Of SS Cuminic Acid, and Cymole vist Oil of Cumin. 
Ditte Range of te mperature 
- pelle yoat ie boiling noon within which the sub- 
Pole itterence mac bo "ep stance would all distil. | 
: °o 
15-1 ‘ | 36 
1796 | C,H, | 285 12 
‘With dalps: the 
at ies wie single ot the results presented in 
ion GE btn icine 
the Sean increment for 
ela tert series of hydrocarbons. 
