314 Friedel and Orafis on the combinations of 
and floats upon the surface of the solution. It burns with a 
siliceous smoke, has a disagreeable odor until it has been purified 
by repeated distillations, and boils at about 285°.. The product, 
which was purified as far as possible by a number of distilla- 
tions, was analyzed. 
I. Substance=0-1861 grms. ; CO,=0°4090 grms. ; H,O=0-2068 
TMS. 
grms. 
IL The product of another operation, whose boiling point was 229°- 
ae Substance=0'2585 grms.; CO,=0°5863 grms. ; H,O= 
0 : 
. 0. _ Caleulated for O i Serie 
a 5771 Fis 
Only a small quantity of this body is produced in the prepa- 
ration of considerable quantities of silicic ethyd, and we have 
not succeeded in isolating it in a perfectly pure state during 
that preparation; its composition is, however, not doubtful, 
and we were able to recognize its identity with the same oxyd, 
which can be easily obtained and purified by a method described 
below. ‘This oxyd must be derived from the oxyd of zinc, 
which is formed by the action of the air upon zinc-ethyd while 
charging the digester. Friedel and Ladenburg* have found 
that free and combined oxygen can be substituted for a part of 
the chlorine in chlorid of silicon, with formation of the oxy- 
chlorid, O {Sick This oxychlorid is probably formed in the 
form the oxyd O {Sica whose analysis is given above. 
considered as the ether of the radical silicic- 
triethyd O } Stn , and as analogous with the: simplest ether of 
succeed 
the chlorid of acetyl ; but the study of the products of the reac- 
tion is not yet completed. ies 
_ Action or Bromine on Sinictc Ernyp. 
ing distineui hes silicic ethyd more completely from the 
obtained by the action of the chlorids of 
DA ~ eae .F oo. 
* Compt es, Ixvi, 539. 
as 
