Silicon with Alcoholic Radicals. 325 
separates from the silicic ethyd to give rise to the oxyd, and 
consequently the continued substitution of chlorine for hydro- 
gen takes place in an atom of ethyl already containing chlorine, 
and not as might have been expected in an atom of ethyl, which 
to 
by preference in the atoms of ethyl which are fr chlorine. 
€ observation which we have made is not without analogy, 
for Lieben* has shown that, in the action of i n 
takes 
Cre | O, while the other atom of ethyl remains unacted 
u It is remarkable that this analogy should exist between 
ether and silicic ethyd, a body resembling a hydrocarbon so 
much more clearly than ether does. 
OxyDaTION oF Sinicic ErHyp. 
We have already stated that silicic ethyd is a very stable 
compound, and that in order to oxydize it completely with 
sttong nitric acid or with a mixture of chlorhydric acid and 
chlorate of potassium, it is nec to operate at a tempera- 
L Substance=0-2275 grms.; CO;=0'3880 grms.; H,0=0-2010 
grms, 
= Substance=0°3205 grms. ; SiOz=0°1960 grms. 
L Il. Calculated for Si0(CoHs)s 
C=4651 ao 47-05 
: aie 2853 Q7-45 
* Bulletin de la Société Chimique, IL, viii, p. 429, and Amnalen der Chem. und 
