' 
4 
2 
‘ 
; 
Chemistry. | 115 
flame, as already observed by Bunsen. The light of burning magnesium 
contains all the rays peculiar to the metal, without the inversion observed 
y Fizeau in the combustion of sodium.—Annales de Chimie et de 
Physique, \xvii, p. 340. Ww. G 
4, 
n the chemical constitution of the American rock oil—ScuoR.EM- ° 
kerosene. The oil in question is found to contain a series of homologous 
hydrocarbons of the general formula CnHn-+-2 and consisting of the 
hydrurets of the alcohol radicals. The oil, which boils below 120° C., 
‘ contains the four hydrurets, 
C,,H,., hydruret of amyl, boiling at 39° C., 
12) 14) . hexyl, % 68° C., 
©, ,H . heptyl, “ 98° C,, 
63 octyl, ” 119° C. 
The author found precisely the same products in the American petro- 
leam or rock oil. e oils are first purified by strong nitric acid, which 
leaves the greater part unattacked, but removes benzole and toluole. After 
washing, drying over caustic potash, and distillation with sodium, the four 
hydrurets already mentioned were obtained as in coal tar. Benzole and 
toluole are found in larger proportion in cannel coal tar than in petroleum. 
—Proe. Manchester Phil. Soc., March 11, 1863. W. G, 
e new organic compounds of silicon—FriepEL and Crarrs 
have prepared, in the laboratory of Wurtz, some interesting compounds 
of Silicon with organic radicals. By heating together silicic ether, 
Vv 
(.i.), Lo,, and bichlorid of silicon, Si,Cl,, the authors obtained a 
: iv ¢ 
new compound having the formula PS "er Og. This body boils at 
is ae | 
Cl 
about 156° C.; the density of its vapor is 7-05 by experiment and 6-87 
by theory. It may be regarded as silicic ether in which one equivalent of 
the body, C,H Op is replaced by one equivalent of chlorine. A second 
f Iv 
Product is found at the same time, the formula of which is »/@'2, ) | Oy 
2(C,H1,) 
i 
and which is therefore the dichlorhydrine of silicic ether, Equal equiva- 
lents of the mono-chlorhydrine and the amylic alcohol give a new ether, 
iv : 
Si 
the formula of which is 3(C,H,) | Og, that is, normal silicate of ethyl, 
C,oHi, 
e 
