290 REroRT — T89S. 



Natural Colouring Matters. 



Wool Book XIII. 



Jlordaut Colours. Morinda Eoot (Cr) (Cu) fFe). ^Morinda citrifolia (root). 



,, Mang-kudu (Cr) (Cu) (Fe). 3Iorinda umbellata (root-bark). 



„ Chay Root (Cr) (Cu) (Fe). Oldenlandia umbellata (root). 



„ Munjeet (Cr) (Cu) (Fe). Rubia cordifolia (root). 



„ Madder (Cr) (Cu) (Fe). Rubia tinctorum (root). 



„ Lac-d3'e (Cr) (Cu) (Fe). Coccus ilicis (insect). 



„ Cochineal (Cu) (Fe). Coccus cacti (insect). 



Additional Colours. 



Oxidation Colour. Chromogen I. (1 . 8) Dioxy-riaphtlialene- (.^i . G) disulphonic acid ; 

 oxidised with bichromate of potash. S. and J. III. 504. 



BLACK COLOURING MATTERS. 

 Class I. Very Fugitive Colours. (Wool.) 



Azo Colours. 



"Wool Book XIY. 



Acid Colour. 4. Violet Black. From 77-phenylenc-diamine, with a-naplithylamine 



and a-naphthol-sulphonic acid NW. S. and J. III. 502. 

 Direct Cotton 1. Nyanza Black B. From y;-phenylena-diamine-azo-a-naphthyl- 

 Colours amine and amido-naphthol-sulphonic acid 7. 



„ 2. Tabora Black R. Constitution not published. , 



Notes. — During the first ' fading period ' Violet Black changes to a 

 dull vinous red colour. 



Class II. Fugitive Colours. (Wool.) 

 Azo Colours. 



AVool Book XIV. 



Acid Colours. G. Azo Nigrine R. From plienol-disulphonic-acid-azo-o-naphthyl- 

 amine and ;8-naphthol. 

 „ 12. Wool Black. From amido-azo-benzene-disulphonic acid and 



^-tolyl-/3-naphthylamine. S. and J. III. 139. 

 „ 13. Jet Black G. Constitution not published. 



„ 19. Phenylene Black. From o-naphthylamine-disulphonic acid-azo-o- 



naphthylamine and diphenyl-;«-phenylene-diamine. S. and J. 

 III. 152. 

 „ 21. Anthracite Black R. From a-naphthylamine-disulplionic acid and 



a-naphthylamine-azo-diphenyl-w -phenylene diamine. 

 Azo Acid Black B. Constitution not published. 

 Azo Acid Black G. Constitution not published. 

 10. Direct Deep Black T. Constitution not published. 

 Columbia Black 2B. Constitution not published. 

 Columbia Black B. Constitution not published. 

 Oxy Diamine Black N. Constitution not published. 

 Union Black S. Constitution not published. 

 Oxy Diamine Black SOOO. Constitution not published. 

 Columbia Black R. Constitution not published. 

 Diamine Black BH. From benzidine, and 7-amido-naphthol-sul- 

 phonic acid, and amido-naphthol-disulphonic acid H ; developed 

 ■with Fast Blue Developer AD. 

 Diazo Black B. From benzidine and a-naphthylamine-sulphonic 

 acid L; developed with ;8-naphthol. 



