172 Certain Neio Derivatives in the Aromatic Series. 



Para-Nitraniline-azo-dialphaNaphtol. 



Para-Nitraniline-azo-dibetaNaphtol. 



Toluidine-azo-dialphaNaphtol. 



Toluidine-azo-dibetaNaphtol. 



Xylidine-azo-dialphaNaphtol. 



Xylidine-azo-dibetaNaphtol. 



Amidoazobenzol-azo-dialphaNaphtol. 



Amidoazobenzol-azo-dibetaNaphtol. 



Sulphanilicacid-azo-alphadiNaphtol. 



Sulphanilicacid-azo-betadiNaphtol. 



AlphaNaphtylamine-azo-alphadiNaphtol. 



Naphthionicacid-azo-alphadiNaphtol. 



Naphthionicacid-azo-betadiNaphtol. 



BetaNaphtylaminesulphonicacid-azo-alphadiNaphtol, 



BetaNaphtylaminesulphonicacid-azo-betadiNaphtol. 



Chinolin-azo-betaNaphtylaminesulphonic acid, 2 : 5. 



Chinolin-azo-alphaNaphtolsulphonic acid, 1 : 4. 



Chinolin-azo-beta-gammaNaphtylaminesulphonic acid. 



betaNaphtylaminesulphonic acid (2 : 6)-azo-alphaNaphtoldisul- 



phonic acid, 1:4:8. 

 betaNaphtylaminesulphonic acid (2 : 5)-azo-betaNaphtol. 

 betaNaphtylaminesulphonic acid C2 : 5)-azo-betaNaphtoldisul- 



phonic acid, 2:6:8. 

 betaNaphtylaminesulphonic acid (2 : 5)-azo-betaNaphtoldisul- 



phonic acid, 2:4:8. 

 betaNaphtylaminesulphonic acid (2 : 5)-azo-alphaNaphtoldisul- 



phonic acid, 1:4:8. 

 Naphthionic acid-azo-alphaNaphtoldisulphonic acid, 1:4:8. 

 Tribromaniline-azo-betaNaphtol. 

 Metadioxyazotribrombenzol. 



Tribromaniline-azo-alphaNaphtolmonosulphonic acid, 1 : 4. 

 Tribromaniline-azo-betaNaphtolmonosulphonic acid, 2 : 6. 

 Tribromaniline-azo-betaNaphtoldisulphonic acid, 2:3:6. 

 Tribromaniline-azo-alphaNaphtoldisulphonic acid, 2:6:8. 

 Tribromaniline-azo-alphaNaphtylamine. 

 Tribromaniline-azo-betaNaphtylamine. 



Tribromaniline-azo-betaNaphtylaminesulphonic acid, 2 : 5. 

 Tribromaniline-azo-betaNaphtylaminesulphonic acid, 2 : 6. 



PREFACE. 



It is a wide-spread, popular idea that the Coal-Tar Iudustr_y has 

 revolutionized the theory and practice of dyeing. This is only true 

 in part, because the improvement made possible by the brilliant 

 work of the leaders in Color-Chemistry has been in great measure 

 annulled by the dyers, who, instead of using the best and most 



