OF ARTS AND SCIENCES. 281 



Found. 

 2. 



Br 75.82 75.68 75.34 75.G0 



Calculated for CjII^Br^. 12 3 



The substance is evidently a tetrabromstyrol. It is a thick viscous 

 oil, soluble in alcohol, ether, and carbonic disulphide. It begins to 

 deconapose on heating at a comparatively low temperature. 



It is to be hoped that the study of the products formed by the action 

 of boiling water or dilute alkalies on the above compound, and also on 

 the substance obtained by the addition of bromine to the dibromstyrol 

 formed from the a phenyltribrompropionic acid, will show not only 

 the structure of the two dibromstyrols, but also of the two monobrom- 

 cinnamic acids. 



