350 REPORT—1896. 
Direct Cotton 12. Metazurin B. Constitution not published. 
Colours. 14. Benzo Blue 3B. Constitution not published. 
15. Benzo Red BlueG. Constitution not published. 
16. Columbia Blue G. Constitution not published. 
17. Chicago Blue R. Constitution not published. 
18. Naphthazurin. Constitution not published. 
23. Diamine Blue 2B. From benzidine and amido-naphthol-disul- 
phonic acid H. 
24, Diamine Blue 3B. From tolidine and amido-naphthol-disulphonic 
acid H. 
25. Benzo Cyanine R. Constitution not published. 
26. Indazurin. Constitution not published. 
27. Direct Blue B. From dianisidine, dioxy-naphthoic-sulphonic acid, 
and a-naphthol-p-sulphonic acid. 
28. Heligoland Blue 3B. Constitution not published. 
29. Benzo Azurine G. From dianisidine, and a-naphthol-mono-sul- 
phonic acid NW. S. and J. 210. 
30. Benzo Red Blue R. Constitution not published. 
31. Columbia Blue R. Constitution not published. 
32. Benzo Azurine 3G. From dianisidine, and a-naphthol-mono-sul- 
phonic acid L. 8. and J. 213. 
3. Brilliant Metazurin OOO. Constitution not published. 
0 34. Diamine Blue BX. From tolidine, a-naphthol-mono-sulphonic acid 
NW, and amido-naphthol-disulphonic acid H. 
6 35. Diamine Blue B. From ethoxy-benzidine, B-naphthol-6-disul- 
phonic acid, and a-naphthol-mono-sulphonic acid NW. S.andJ. 
205. 
36. Heligoland Blue R. Constitution not published. 
37. Oxamine Blue 3R. From tolidine, B-amido-a-naphthol-8-sulphonic 
acid, and a-naphthol-a-sulphonic acid. 
38. Diamine Blue 3R. From ethoxy-benzidine, and a-naphthol-mono- 
sulphonic acid NW. S.and J. 206. 
39. Azo Biue. From tolidine, and a-naphthol-mono-sulphonic acid 
NW. S.and J. 187. 
3. Azo Navy Blue. Constitution not published. 
5. Direct Blue Black B. Constitution not published. 
4 
4 
23. Azo Acid Blue B. Constitution not published. 
Acid Colours. 
Natural Colouring Matters. 
Mordant Colours. Logwood (Al). Wood of Hematoxylon campechianum. 
Nores..—Azo Acid Blue acquires, on fading, a very red shade ; 
Turquoise Blue 2B and Glacier Blue change to a green during the first 
period. Basle Blue B and Benzo Blue 3B lose their bloom of colour 
during the first ‘fading period,’ the remaining dark greyish colour being 
moderately fast. Direct Cotton Colours, 12, +17, 18, 23, 24, 25, change 
from blue to grey during the first ‘fading period,’ and Nos. 15, 16, and 26 
to 39 all acquire a marked reddish tint. On this account these colours 
might almost equally well be placed among the ‘very fugitive colours.’ 
Cuass III. Moprratety Fast Contours. (W001) 
The colours of this class show distinct fading at the end of the second 
period (August 12 to September 3, 1895), which becomes more pronounced 
at the end of the third period (September 3 to September 20, 1895). A 
ale tint remains at the end of the fourth period (September 20, 
1895, to April 7, 1896), and at the end of a year’s exposure the colour 
has entirely faded, or, at most, mere traces of colour remain. 
