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. 4: Chemistry and Physics. 195 
acid as a combination of glycocoll and cyanuric acid. The two 
Ww. G. 
' an oxychlorid of silicon. — passing the vapor of 
chlorid of silicon through a eg tube either empty or filled 
3 
Si(€,H.8 SiCl 
©{SietHey; Of scl? : 
as . $i(€,H ‘ , 
The oxyd of silicon-triethyl, 0 | Stee s} ° is another body in 
which two atoms of silicon are united by one of oxygen. As the 
oxyd of silicon-triethyl may be formed by heating the oxychlorid 
with zine-ethyl, no reasonable doubt can be entertained as to ru 
constitution of the oxychlorid, The authors call attention to the 
of ney between the oxychlorid of silicon and perchlorinated oxyd 
of met yl, ; 
SiCl €Cl, 
© 1 sic: oa €Cl, 
and suggest that the former might be called _perchlorinated silico- 
ine yhe ether or oxyd of trichlorosilicon.— Comptes Rendus, \xvi, 
: W. & 
tee bodies like indigotine and albumine, all take up hydrogen. 
ven black matters like ulmin, coal, and wood charcoal, present no 
*xceptions to the genera : sig’ 
€ reagent which Berthelot employs is iodhydric acid in aque- 
ous solution of density 2. The organic body is heated to 275° C. 
2 4 sealed tube for ten hours with a large excess of the acid, the 
“xeess of the latter over the calculated quantity being greater in 
Proportion as the organic substance is poor in hydrogen. The re- 
markable reducing power of the iodohydric acid under the circum- 
folie. (epends upon the fact that the acid is resolved at 275° into 
dine and hydrogen. The special results of the investigation are 
as follows : 
Part Ist. Series of fatty sub | 
y substances proper. 
1 Carburets of hydrogen. 
