28G REPORT— 1898. 



mordant employed is indicated in brackets after the name of the dye- 

 stuff. 



The colours marked thus (*) appear to be somewhat faster tlian the 

 rest of the class in -which they are placed. 



BROWN COLOURING MATTERS. 

 Class I. Very Fugitive Colours. (Wool.) 



The colours of this class have faded so rapidly that at the end of the 

 first 'fading period' (July 22 to Aug. 22, 1896) only a very faint colour 

 remains, or it has become very materially altered in hue. At the end of 

 the fifth period (about one year) all traces of the original colour have 

 disappeared, the woollen cloth exhibiting merely a yellowish, brownish, or 

 greyish tint, according to the colour of the original pattern. 



A:m Colours. 



Wool Book XII. 



Basic Colours. 1. Leather Brown E. Constitution not published. 



„ 2. Chrj-soidine AG. From aniline and 7)t-phenyleue-diamine. 



S. and J. III. 16. 

 „ 3. Chrysoidine FF. From aniline and w-toluylene-diamine. 



„ 8. Leather Brown V. Constitution not published. 



Direct Cotton 1. Titan Brown Y. Constitution not published. 



Colours. 2. Benzo Brown 5R. From Primuline and phenylcnc-diaminc. 



S. and J. IIL 110. 

 „ *4. Cloth Brown (red shade). From benzidine, salicylic auid, and 



a-naphthol-sulphonic acid NW. S. and J. III. 193. 

 „ 13. Benzo Brown G. From sulphanilic acid and Bismarck Brown. 



S. and J. III. 273. 

 „ 25. Hessian Brown MM. From sulphanilic acid, tolidine, and 



rcsorcinol. S. and J. III. 278. 



Azoxy Colours. 



Wool Book XII. 



Direct Cotton 21. Mikado Brown M, Constitution not published. 

 Colours. 



Notes. — In the case of Chrysoidine AG and FF, and Cloth Brown, 

 the colours alter very rapidly during the first ' period of exposure,' the 

 altered colours then fade more slowly, without any further change in hue. 



Class II. Fugitive Colours. (Wool.) 



The colours of this class show very marked fading at the end of the 

 second 'fading period' (August 22 to September 29, 1896), and after a 

 year's exposure they have entirely faded, or only a brownish, drab, or 

 grey tint remains. 



Azo Colours. 



Wool Book XII. 



Acid Colours. 1. Resorcin Brown. From 7n-xylidiae, sulphanilic acid, and rcsorcinol. 

 S. and J. III. 163. 

 „ 2. Fast Brown G. From sulphanilic acid and o-naphthol. P. and J. 



IIL 165. 

 , 4. Acid Brown G. From aniline and w-diamido-azo-benzcne-^^-mono- 



ulphonic acid. S. and J. II. 130. 



