he 
238 Scientific Intelligence. 
num bromide is dissolved and hydrogen bromide gas is passed 
into the liquid, the whole heated in a paraffin bath, the mass 
separates into two layers, the composition of the lower one being 
always the same. It is a pretty thick liquid, of the consistence of 
aqueous glycerin, orange-red in color, not solidifying at —15°, 
permanent at 100°—120°, but decomposing at higher tempera- 
tures into gaseous poaase, insoluble in the hydrocarbons from 
which it is formed, and in carbon disulphide, but miscible in all 
Jo gph with ethyl bromide. It has probably the formula 
ers of the series.— Ber. Berl. Chem. Ges., xiv, eke sy 
xistence of m fiskaien pragy Wwotwenes in the gedit of the dry distil- 
lation of rosin, _ From the lighter portions of the distillate, me 
me pores with serene su rane acid on the water bath. 
Dilution with w and neutralization with barium carbonate 
ave the cymene- oe, shake But on saturating the acid with 
hydrogen chloride and heating. in sealed tubes to 180°, cymene 
it ya was obtained. From 15 rams of rosin-spirit, 800 grams 
of e were procured. On padition with chromic acid, jsoph- 
ehatle : saa was obtained ; thus proving the cymene to belong to 
the meta-series C,H, CH. . To determine the structure of 
the propyl group, isopropyl oad was made to act on toluene in 
ae gah of aluminum chlori cymene was obtained identical 
that Sitatnod a A the sui e hus proving the 
former to be metaisopropyltoluene C HA OH CH j oe H. (3) Several 
co sa ate a od sg new cymene are described. Lieb’ get 
ecx, 1, Oct. * 
8. ‘bn ihe ‘Mieliploncbise of living Protoplasm. _Starting 
from the fact observed by them, that living cells behave difter- 
ently from dead ones, that living protoplasm has the pow 
reducing very dilute ‘solutions of silver which aeea protoplasm 
has not, Lorw and Boxorny have concluded ot living proto 
plasm is chemically of the nature of an aldehyde. ” Reinke 
suggested in it the presence of formic aldehyde, - authors have 
examined the distillate from algw with a negative result. The ur 
own view seems to them the more probable.— Ber. Berl. ber 
Ges., xiv, 2441, Noy, 1881 G, F. B 
