Dr. Simpson on Dibromalhjlammonia. 257 



Table of the ]\Iean Annual Temperature of Ireland. 



XXVII. On a New Base obtained by the Action of Ammonia on 

 the Terbromide of Allyle. By Dr. Maxwell SiMPSONt- 



THE terbromide of allyle, a body recently obtained by M. 

 Wurtz by treating the iodide of allyle with an excess of 

 bromine, is readily acted upon by ammonia, and forms with it 

 a heavy oil, which has all the characters of a base, and is of re- 

 markable constitution. For this new compound I propose the 

 name dibromallylauimonia. As the preparation of the hydro- 

 chlorate of the 'base must precede the preparation of the base 

 itself, I propose to commence v.'ith the explanation of the pro- 

 cess for obtaining the former body. 



Formation of the Ilydroclilorate of DibroiiiaUylammonia. 



To prepare this body, one volume of the terbromide is mixed witli 



about six volumes of a solution of ammonia in weak alcohol ; and 



* The observations of every kind made at Cork embraced probably a 

 longer period. 



t Communicated by the Author. 

 Phil. May. S. -i. Vol. 16. No. 107. Oct. 1858. S 



