70 Royal Society :— 



Hydrochlorate of ninaphtylamine forma acicular crystals ; they 

 are obtained like the sulphate, which they resemble in their general 

 deportment. Composition : 



C,oH,N,0„HCl. 



The platinum-salt of ninaphtylamine forms rather soluble yel- 

 lowish-brown crystals, which are obtained by adding a concentrated 

 solution of dichloride of platinum to an alcoholic or ethereal solution 

 of the base. It has the usual constitution, containing 

 C,oH,N,0„HCl.PtC],. 



If it be permitted, in the absence of further experimental evidence, 

 to speculate upon the molecular constitution of the body which forms 

 the subject of this note, the simplest interpretation of its composition 

 and formation would be to view it as a substitution-product of uaph- 

 tylamiue, but diifering from the ordinary nitro-substitutes, by con- 

 taining the elements of binoxide, instead of tetroxide of nitrogen. 



Naphthylamine . . C^o Hg N = H ^ N, 



H J 



Ninaphthylamine. . C^o H^ N^ 0,= H V N. 



Its formation would then be represented by the equation 



C,„ [H, (NO,),] -f-4 HA=3HA + 8 S + C,„ [H, NOJ N 



< ^ _; > y- ' 



Dinitronaphtaline. Ninaphthylamine. 



Bodies in which binoxide of nitrogen figures as a material of sub- 

 stitution are as yet extremely rare, whilst nitro-substitutes containing 

 the elements of hyponitric acid are of the most general occurrence. 



Some chemists have considered nitrous ether as a binoxide of 

 nitrogen derivative of alcohol. 



Alcohol C, H3 0„ 



Nitrous ether C, i'M) j^a* 



The most interesting illustrations of this kind of substitution, how- 

 ever, have been furnished by Messrs. Church and Perkin* in the 

 colouring matters produced by the action of nascent hydrogen on 

 dinitro-substitutes, or of nitrous acid upon certam monamines. 

 Phenylamine C12 H^ N. 



Nitrosophenyline Cj^ ( ^q )N. 



Naphthylamine Cjj, Hg N, 



Nitrosonaphtyline Cj^ i^r\ )N. 



Expressed by these formulae, the substances in question appear to 

 be closely allied to Mr. Wood's base ; in fact, nitrosonaphtyline has 



* Journal of Chemicp' Society, vol. ix. 1. 



