3852 REPORT—1896. 
Acid Colours. 39. Indigo Blue powder. From toluene-azo-naphthylamine and B- 
naphthol-sodium-disulphonate. 
Wool Book X. 
Direct Cotton 5. Brilliant Sulphon Azurine R. Constitution not published. 
Colours. 6. Sulphon Cyanine. Constitution not published. 
7, Sulphon Azurine. From benzidine-sulphon-disulphonic-acid, 
and phenyl-8-naphthylamine. 8. and J. 182. 
as 10. Sulphon Cyanine 3R. Constitution not published. 
e 13. Brilliant Azurine 5G. From dianisidine and dioxy-naphtha- 
lene-a-mono-sulphonic acid. 8, and J. 215. 
- 19. Naphthyl Blue 2B. From o-amido-diphenylic acid, and 
benzoyl-amido-naphthol. 
ne 20. Benzo Indigo Blue. From dianisidine, a-naphthylamine, and 
dioxy-naphthalene-a-mono-sulphonic acid (1 : 8). 
nS 21. Diamine Blue Black E. From ethoxy-benzidine, B-naphthol- 
8-disulphonic acid, and y-amido-naphthol-sulphonic acid. 
sf 22. Blue JCR. Constitution not published. 
a 40. Benzo Black Blue R. From tolidine-disazo-a-naphthylamine 
and a-naphthol-mono-sulphonic acid NW. S. and J. 226. 
= 41. Congo Fast Blue B. Constitution not published. 
5 42. Benzo Black Blue G. From benzidine-disulphonic acid-disazo- 
naphthylamine, and a-naphthol-mono sulphonic acid NW. 
S.and J. 225. . 
6 44, Congo Fast Blue R. Constitution not published. 
Natural Colowring Matters. 
Wool Book X. 
Mordant Colour. Logwood (Cr). Wood of Hematoxylon campechianum. 
Norres.—The Patent Blues become darker during the first two fading 
periods. Brilliant Sulphonazurine R acquires a decided reddish tint 
during the later stages of fading. The Sulphocyanines and Gallocyanine 
DH appear to be faster than the rest of the colours placed in this class, 
and do not change in hue during the fading process. The fastness of the 
Alkali Blues is probably greater than is usuaily supposed to be the case. 
The blue given by logwood with chromium is much faster than that 
obtained with aluminium mordant. 
Crass IV. Fast Conours. (Wooz.) 
The colours of this class show comparatively little fading during the 
first, second, and third periods. At the end of the fourth period a pale 
shade remains, which at the end of the year’s exposure still leaves a pale 
tint. 
Triphenylmethane Colours. 
Wool Book X. . 
Mordant Colour. 9. Gallein (Cr). Oxidation product of pyrogallol-phthalein. 
8. and J. 335. 
Wool Book IX. 
Basic Colour. 25. Gentiana Blue 6B. Hydrochloride of tri-phenyl-rosaniline. 
Oxazine Colours. 
Wool Book X. 
Mordant Colour. 7. Gallamine Blue (Cr). Product of action of nitroso-dimethyl- 
aniline-hydrochloride on gallaminic acid. S. and J. 346. 
Azo Colours. 
Wool Book IX. 
Acid Colour. 36. Naphthol Blue Black. From p-nitraniline, aniline, and amido- 
naphthol-disulphonic acid H (1 : 8). 
