Chemistry and Physics. 387 
of rosin by distillation in a current of super-heated steam. In 
1867, he examined a sample which began to boil at 50° and. which 
distilled almost completely below 100°. On fractioning, a liquid 
to condense at 116°. hen fractionated, toluene was the sub- 
stance of lowest boiling point obtained. Hence the temperature 
of distillation determines the products.—/. Chem. Soc., I, xxx, 
29, July, 1876. G. F. B 
3. On the Constitution of the Benzene Derivatives.—W ro- 
BLEWSKY described in 1875 two metabromtoluenes having identi- 
other the 1:5 position en escribes two ortho-toluidines 
aving the methyl and amidogen groups respectively in the posi- 
tions 1; 2 and 1 tarting with dibromparatoluidine, in which 
amido-produet obtained from this with sodium amalgam, a second 
ortho-toluidine was obtained, identical in properties with the for- 
inet, thus adding a new confirmation to Kekulé’s theory. The 
Progress of the replacements is thus represented : 
CH, CH, CH; CH, 
ve 1 
2 
a 
r 
6 | NH, 
5 ; 3 
Bee 
I I I 
CH, CH, CH, CH; 
Ais. of A 
1\ 
Gey ; 
mle ale als He war 3| Br 
A \Y : 
[5 2 6 ‘nc 6 2} 
— =Brfd 3 Br Br Is Pat : r [6 3| Br 
Pe 7. Ey Ni 
NH, 4 5 
V/ 
A ‘ I 
Ber. Berl. Chem. Ges., ix, 1055, July, 1876. G. F. B. 
