ON THE ACTION OF LIGHT UPON DYED COLOURS. 269 



Natural Colouring Matters. 



Wool Book VII r. 



Non-mordant Colours. 3. Gardenia florida (fruit). 



„ 4. Coscinium fenestratum (root). 



„ 5. Evodia melisefolia (bark). 



Note. — The fugitive character of the dyes given by Coscinium fenes- 

 tratum and Evodia melicpfolia, the colouring principle of which is the base 

 Berberine, is quite in accordance with tlie similar result obtained with all 

 other 'basic colours.' 



Class II. Fugitive Colours. (Wool.) 



Azo Colours. 



Wool Bo-ik VIII. , , , , . • ■, J 



Acid Colour. 1. Metanil Orange I. From w-diazo-benzene-sulphonic acid an<S 



o-naphthol. S. and J. 77. 

 Basic Colours. I. Tannin Orange R. From ^^-amido-benzyl-dimethyl-amine and 

 /3-naphthol. 

 2. New Phosphine G. From j?-amido-benzyl-dimethyl-amiae and 

 resorcinol. 

 Wool Book VII. 

 Direct Cotton 2. Toluylene Brown G. 



Colours. 18. Nitrophenine. From ^>nitraniline and dehydro-thio-^-toluidine. 

 Mordant Colours. 1. Cloth Brown R (Cr.) (Al.) (Sn.). From benzidine, salicyclic 

 acid, and /3-naphthol-sul phonic-acid. S. and J. 171. 

 4. Cloth Orange (Cr.) (Al.) (Sn.). From benzidine, salicylic acid,, 

 and resorcinol. S. and J. 170. 



13. Congo Brown R (Cr.) (Al.) (Sn.). From naphthionic acid and 



Cloth Orange. S. and J. 216. 



14. Congo Brown G (Cr.) (Al.) (Sn.). From sulphanilic acid and 



Cloth Orange. S. and J. 217. 

 I, 15. Cloth Brown G (Cr.). From benzidine, salicylic acid, and 



dioxy-naphthalene (2 : 7). S. and J. 172. 



Natural Colouring Matters. 



Wool Book VHI. 



Mordant Colours. Jack-wood (Al.) (Sn.). Wood of Artocarpus integrifolia. 

 „ Kamala (AL). Fruit glands of Mallotus philippinensis. 



Notes. — Tannin Orange II deserves special notice since it is superior 

 in fastness to all other basic yellows hitherto examined. 



The Indian dyestuff Kamala has been regarded by some as a fast dye- 

 stuff, but as applied to wool it cannot be so regarded ; applied to silk, 

 however, it is very much faster. 



Class III. Moderately Fast Colours. (Wool.) 



Azo Colours. 



Wool Book VIL ^ ^ ^._. ^ .,■ -u A 



Direct Cotton .5. BrilUant Orange G. Constitution not published. 



Colours. G. Toluylene Orange G (O.) (Cr.) (Al.) (Sn.). From tolidine, o-creso- 



tinic acid and ;«-toluylene-diamine-sulphonic acid. S. and J. 196. 

 7. Cotton Orange R. From m-sulphanilic acid and Cotton Orange G. 

 " s! Cotton Oran°ge G. From primuline and w-phenylene-diamine- 



disulphonic acid. 

 2. Benzo Orange R (Cr.) (Al.) (Sn.). From benzidine, salicylic acid, 

 and naphthionic acid. S. and J. 173. 

 Cotton Yellow G (Cr.) (Al.) (Sn.). From ^>amido-acetanilide 

 and salicylic acid, &c. S. and J. 144. 



