Chemistry and Physics. 307 
esis of Kekulé. Exactly as monobasic acids yield common ketones, 
so the diabasic acids should give double ketones having the car- 
bon atoms in a ring form. ‘Thus from succinic acid, di-ethylene- 
di-ketone is formed : 
C HOOC CO 
‘CH, no” © CH, 
i ; 
CH, HC, ovo 
H, Aa 
\cooH 
~H,0,=C,H,O, 
+H, and C,H,O, + Zn,=C,H, +(ZnO), +H,, it may be considered 
a8 proved that the benzene nucleus has the constitution assigned 
sulphuric acid, so, | oe , acted on the monatomic alcohols to 
OSO0,0H. (CHOSO,O 
MSS wine 
drates have an increased rotatory power to the right. Milk sugar 
ives dextrose and galactose.—J. pr. Ch., Il, xx, 1, Aug., 1879. 
B. 
G. F, 
_1. On the Conversion of Aurin into Trimethylpararosani- 
line—Darx and Scuortemmer, by acting on aurin with ammo- 
nia, have sought to obtain the intermediate products between this 
substance and para-rosaniline. As ammonia gave so much trouble, 
they tried methylamine and found that in aqueous solution, this 
ie ated readily on aurin at 125 hos re amabee it Bs 
fntirely into a le bod ssessiD the properties of a tri- 
methybrosaniline : C,H, (CH,NH,),=C,H, (CH,),N, + (H,0), 
ethylamine acts similarly, converting the aurin into purple 
coloring matters—J. Chem. Soc., xxxv, 562, Aug., 1879. 
G. F. B 
