425 
; H(€H;)> 
09 » (the second member being wanting) i é H, 
enon », €. (CH s)a 
at 132°, and di-amyl { €,H at 158°. (4) The fourth group 
€H oH, 
includes hydrocarbons in which one carbon atom is united with 
sp thers, Thus far only one member of this group is known, 
e carbo-dimethyl-diethyl of, rey my and Ladenburg €(CH,), 
(e, H,)., which boils from 86° to 87° C.* 
From this classification it is oy to see that in the marsh-gas, 
in the benzol series of hydrocarbons, conclusions as to the Gueation 
tion of the bodies may be seh from their boiling eee ero 
arm. Galil 214, Aug. 1 G. 
w source of be aleohol —Sitva has sckresiad § in 
the faborattire ‘of Professor pr a sample of fixed oil, derived, 
like castor and croton oil, fro the family of the euphorbiaces, 
more active. The similar origin and analogous properties of this 
and castor oil suggested its distillation ite an alkali, as had been 
<@ anaes groups may be more clearly shown by a Agee representation. Tak- 
H 
7: ene 
ing propylie (tritylic) hydrid as a ripessiblre of the first H-O-H, the second 
H-U-H 
sad bp Bi ag 
-0-0- | 
F : re s % : H-C-d. “Ht 
may be represented by H | H_ trimethyl-formene, the third by tt 1 4 
: ‘ : 7 | 3 
isi B-U-O-0- 
H-(-H HHH 
4 = H-6-H 
3 H H 
Ls I 
di-isopropyl, and the fourth by oe 14 B, carbo-dimethyl -diethyL In 
so 
the first the middle carbon atom is sill to two others, in the second the upper 
carbon atom is connected with three others, in the third both the main ent 
seit oe four bonds of the | middle carbon a 
are | 
Am. Jour. Scr.- -SECOND sai, Vou. XLVII, No, 141.—May, 1869. 
28 
