54 Scientific Intelligence. 
of the carbon atoms are combined with less than two hydrogen 
atoms or their equivalent.—J. Chem. Soe., I, xi, 970, Oct, El 
n the Constitution of the Allyl compounds.—The generally 
riniiees formula for allyl aleohol is CH,=;=CH---CH,OH ; and 
hence many chemists assign to crotonic acid derived from it, the 
1 
similar formula 
CH,=:-CH-.-CH,---COOH. 
But from other and independent evideiice, Kekulé has assigned 
to erotonic acid the formula 
CH, —-—CH-=:-CH-—.—COOH. 
If this — formula be the correct one, then i in the conversion of 
duce oxalic acid. If, however, this teauiataie CH g==CH-.-- H.R, 
no ace — acid will be produced, but panties (or scbecie} a 
oxalic acids, and from the cyanide, malonic acid or its decomposi- 
tion products. On oxidizing allyl alcohol with chromic acid, car- 
bonic gas is evolved, and formic acid, but no acetic, is produced. 
possess the same ‘structure, corresponding BS the second of the 
G. F. B. 
2 Brazilin and Resorcin.—Emux Korr has subjected 
horasitin toa a Dem investigation. The material was obtained from 
the dark wnish-red crusts which are formed in considerable 
quantity in rs preparation of Brazil-wood extract, and which con- 
sist of brazilin and a Salciam teen lake. These crusts are 
rubbed up with water containing 5 per cent prea ere 
_ the residue washed, and then boiled with water containing 1 
