MEMOIRS 



OF THE 



LITERARY AND PHILOSOPHICAL SOCIETY 

 OF MANCHESTER. 



I. The Action of Sulphuric Acid on Diallyl. By William 

 Robert Jekyll, Dalton Chemical Scholar in Owens Col- 

 lege. Communicated by Professor H. E. Roscoe, F.R.S. 



Read October 18th, 1870. 



Diallyl was first prepared by Berthelot and Lucain 1856. 

 They found that it dissolves in concentrated sulphuric acid, 

 with the evolution of much heat, and that after some hours 

 an oil separates, which appears to be a modified hydro- 

 carbon. 



In 1866 Schorlemmer published a paper on a new series 

 of hydrocarbons derived from coal-tar, having the formula 

 (C n H 2n _ 2 ) 2 (Roy. Soc. Proc. xv. 132). He there says, 

 " As these hydrocarbons were obtained by the action of 

 sulphuric acid on coal-tar oils boiling below 120 , and as 

 they differ by C 2 H 4 , it appears to me almost certain that 

 they are polymers of the hydrocarbons of the acetylene 

 series C w H 2n _ 2 , formed in the same way as diamylene 

 is formed by treating amylene with sulphuric acid. In 

 order to test this theory, I have made some experiments 

 with the two isomers C 6 H IO , viz. diallyl andhexoylene. By 



SER. III. vol. v. 13 



