12 ON THE ACTION OF SULPHURIC ACID ON DIALLYL. 



with water. Combination took place with a hissing noise, 

 and with the evolution of a considerable amount of hydro- 

 bromic acid. After the hydrocarbon had been treated 

 with an excess of bromine for several hours, the excess 

 was removed by means of a dilute solution of caustic soda. 

 The bromine product having been separated from the 

 caustic soda, it was dried over calcium chloride and dis- 

 solved in ether, which was got rid of by keeping the solution 

 in a water-bath for about six hours, at the end of which 

 time the bromine product was left in the form of a brown 

 solid that became viscid at ioo°. This crude product, 

 without further purification, was analyzed, with the fol- 

 lowing results : — 



0-5172 substance gave 0*5546 silver bromide, and 0-0048 silver. 



Calculated for 

 Found. C 12 H. 20 Br 2 . C 18 H a0 Br a . 



46*30 per cent, bromine. 49' 3 8 3 9 -40 per cent, bromine. 



Hence it appears probable that the oil boiling at 240 - 

 245 is a mixture of the hydrocarbons (C 6 H 10 ) t and (C 6 H IO ) v 

 while the formula of the one boiling at 205°-2i5° is 

 (C 6 H IO ) z , and of the one boiling at 275°-285° is (C 6 H IO ) r 



In conclusion, I have much pleasure in tendering my 

 thanks to Dr. Roscoe and Mr. Schorlemmer for their kind- 

 ness and attention to me throughout the whole course of 

 this research. 



