a new Product of Decomposition of Dinitrobenzole. 325 



the whole is changed into a brown resinous mass, which cry- 

 stallizes from alcohol in the form of yellowish needles. This 

 body is insoluble in water and perfectly neutral, combining 

 neither with acids nor alkalies. It is manifestly nitrodibro- 

 maniline, corresponding with tribromaniline. We may regard 

 the following as the formula, although as yet we have not 

 analysed the substance : — 



cJno 4 In--(?) 



The production of nitraniline appears to us to be interest- 

 ing, in reference to the question of substitution, which is still 

 in debate amongst chemists. If we reject that theory, we can 

 scarcely understand the constitution of this base and its re- 

 lations to aniline. 



The group of aniline compounds has thus been again aug- 

 mented by the discovery of nitraniline. The following is a 

 synopsis of the different members of this family : — 



Aniline C 12 H 7 N. 



Chloraniline .... C 12 j** 6 J>N. 



Dichloraniline . . . C w {g*jN. 



Trichloraniline . . . 



Chlorodibromaniline . 



Bromaniline . . 



Dibromaniline ^p e. C 12 4~g^ T*N. 

 Tribromaniline . . . C,<X xtt r**« 



Nitraniline .... C, J *Jo 1 N - 



f~H 4 1 

 Nitrodibromaniline . . C 12 ^ N0 4 ^N. (?) 



LBr 2 J 

 In concluding this memoir, we may remark that the body 

 which Zinin obtained by treating dinitrobenzole in the same 

 manner, i. e. the compound C 6 H 4 N, is evidently the last 

 product of the action of the hydrosulphuric acid upon dini- 

 trobenzole, our nitraniline being the first. Zinin's compound 



