240 REPORT — 1894. 



Thiobenzenyl Colours. 

 Wool Rook III. 

 Basic Colours. 9. Thioflavin T. Dimethyl-dehydro-thio-toluidine-methyl chloride. 



S. and J. 384. 

 Acid Colour. 29. Thioflavin S. Sodium salt of dimethyl-dehydro-thio-toluidine- 



sulphonic acid. S. and J. 385. 

 Direct Cotton 81. Primulin. Sulphonated product of the interaction of sulphur and 

 Colour. ^-toluidine. S. and J. 386. 



Natural Colouring Matters. 



Non-mordant Colours. 1. Annatto. Pulp from fruit of Bixa orellana. 



„ 2. Saffron. Stigmata of the flower of Crocus sativus. 



„ 3. Turmeric. Rhizome of Curcuma tinctoria. 



Mordant Colours. 1. Young Fustic (AL). Wood of Rhus cotinus. 

 ,, 8. Tesu (Al.). Flowers of Butea frondosa. 



Notes. — Certain of the nitro colours show extreme sensitiveness to 

 light by rapidly altering in hue. During the first 'period of exposure,' the 

 rich red-orange colour of Aui'antia, for example, soon changes to brown, 

 and the pure lemon-yellow of Picric Acid changes to orange-yellow ; in 

 both cases these altered colours fade slowly without any further change 

 in hue, and might almost be placed among the ' moderately fast colours.' 

 Brilliant Yellow, Martius Yellow, and Naphthol Yellow S behave some- 

 what like Picric Acid, but the alteration in hue is much less pronounced. 

 Thiazol Yellow, Mimosa YeUow, Thioflavin T and S, and Primulin all fade 

 rapidly during the iirst ' period of exposure ' to a yellow-buff, which then 

 appears to be ' moderately fast.' 



Class II Fugitive Colours. (Wool.) 



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

 second 'fading period ' (July 1 to July 31, 1893), and after a year's 

 exposure they have entirely faded, or only a tint remains. 



Azo Colours. 

 Wool Book III. 



Acid Colours. 1. Orange R. From sylidine-sulphonic acid and 0-naphthol. S. 

 and J. 81. 

 „ 6. Orange I. From ^-sulphanilic acid and a-naphthol. S. and J. 72. 



„ 14. Narcein. Sodium bisulphite compound of Orange II. S. and J. 



103. 

 „ 35. Phenoflavin. From wi-sulphanilic acid and diamido-phenol-sul- 



phoriic acid. 

 Direct Cotton 4. Benzo Orange R. From benzidine, salicylic and naphthionic acids. 

 Colours. S. and J. 173. 



„ 5. Salmon Red. Sodium salt of diamido-diphenyl-urea-disazo-naph- 



thionic acid. S. and J. 143. 

 „ 6. Toluylene Orange R. From o-tolidine and m-toluylene-diamine- 



sulphonic acid. S. and J 197. 

 „. 8. CI )th Orange. From benzidine, salicylic acid, and resorcinol. S. 



aud J. 170. 



Quinoline Colours. 



Acid Colours. 41 Quinoline Yellow S. Sodium salt of quino-thalone-disulphonic 

 acid. S. and J. 379, 



