382 Scientific Intelligence. 
SCIENTIFIC INTELLIGENCE. 
I. CHEMISTRY AND Puysics. 
1. On the First Products of the Distillation of Benzol—It is 
well known that in the rectification of benzol, a considerable por- 
tion of distillate comes over at temperatures below that at which 
BI i 
-» Colo 
smelling liquid of specific gravity 0°899 at 17°5°, becoming turbid 
o n E : 
between 35° and 60° ga readily, when treated with alcoholic 
potash, potassium ethyldisulphocarbonate; thus proving the pres: 
ence of carbon disulphide. The fractions between 60° and 75 
d 
and 40°, were then subjected to fractional distillation and frac- 
tional condensation; but in neither case co a product be 
obtained free from CS,. Treatment with alcoholic potash being 
no more successful, the author gave up the attempt to isolate the 
hydrocarbons as such, and treated them with bromine, in order to 
came over, which was nearly pure CS, ; then followed a heavy, 
slightly yellow liquid of an agreeable sweetish odor; and SS 
70° was likewise converted into bromide, fractionated and analyzed. 
It gave the formula of hexylene bromide. Helbing concludes 
therefore that the first runnings of the benzol still contain con- 
dera ylene, less crotonylene and still less hexylene— 
Pharm., clxxii, 181, July, 1874, G. F. B. 
