a new Product of Decomposition of Dinitrobenzole. 321 



and ether, imparting to them a reddish-brown colour; hot 

 water dissolved the greater part of it, but even after continued 

 boiling in this solvent small quantities of a brown resin re- 

 mained undissolved. The hot aqueous solution possessed a 

 fine orange-yellow colour ; upon cooling it afforded beautiful 

 yellow crystals about an inch in length, which, when recry- 

 stallized from water, were perfectly pure. 



Composition of Nitraniline. 



The crystalline matter prepared in the process described, 

 possesses all the properties of a true organic base, obviously 

 quite dissimilar to that obtained by Zinin. The physical pro- 

 perties of the two bodies could scarcely be more unlike. 

 Elementary analysis proved immediately the difference of the 

 two substances, and showed that the crystals, in fact, belonged 

 to the body which we had endeavoured to procure in such a 

 variety of ways. 



By a combustion of the yellow crystals with oxide of cop- 

 per the following results were obtained : — 



I. 0*3035 grm. of substance gave 0*5865 grm. of carbonic 

 acid and 0*1275 grm. of water. 



II. 0*3748 grm. substance gave 0*7119 grm. carbonic acid 

 and 0*1493 grm. water. 



III. The nitrogen was determined by Dumas's method in 

 an atmosphere of carbonic acid. 



Results. — 0*4260 grm. of substance gave 80 cubic centi- 

 metres of moist nitrogen. Barometer 324'", Thermometer 

 16° centig. 

 These numerical results represent the following per cents. 



I. II. III. 



Carbon . . 52*70 51*80 

 Hydrogen . 4*66 4*42 



Nitrogen "... 20*52 



agreeing exactly with the formula of nitraniline, 



c «{Nb 4 } N ; 



The mean of our analysis, compared with the calculated num- 

 bers, stands as follows : — 



12 equivs. Carbon 

 6 ... Hydrogen 

 2 ... Nitrogen 

 4 ... Oxygen 



In order to con trol this formula, we prepared the double 



