168 



MR. E. R. WATSON ON THE INDIGENOUS DYES OF BENGAL. 



Table V . — Summary — Fastness to various Agencies of Dyeings on Silk. 



Dyeing. 



i 



Fastness to 

 light. 



Fastness to 

 soaping. 



Fastness to 

 alkali. 



Fastness to 

 acid. 



Turmeric, raised with acid 



} 







II— III 





ii 



Ill 



, , alum mordant 



I 





III 





ii— in 



III— IV 



Kusum 





I 





I 





i 



IV 



Bakam, alum mordant 





II 



} 





} 





) 



,, alum-soda mordant 





II— III 



II 



ii 



1 I 



,, tannin-iron mordant 





IV 





III— IV 





III— IV 



III— IV 



Palas, without mordant 



} 



III 





I 





ii 



IV 



,, alum mordant 





III 





ii— in 



II 



Latkan, Murshidabad process 

 ,, Nadia process 



} 



II 





III 



III— IV 



} 



in 



! - 



Manjista, alum-soda mordant 



,, alum-soda mordant followed 



j. 



IV 





III— IV 

 IV 



I 



IV 



1 - 



by soaping and raising . . 











; 





) 



Lac, alum mordant 

 ,, alum-soda mordant 





III— IV 



II 



} 



IV 



I 



IV 



IV 

 III— IV 



Kamala, without mordant 





II— III 





IV 





III— IV 



1 iv 



, , alum mordant 





II 





III— IV 





III 



j 



Singhar, without mordant 

 , , alum mordant 



1 



II 



} 



II— III 



} 



II— III 



\ m 



Jackwood, alum mordant 





III 





III— IV 





III 



IV 



Orange II. 





IV 





I 





I 



III 



Naphthol Yellow S. 





I 





I 





I 



IV 



Metanil Yellow E. 





III 





I 





II 



IV 



Scarlet RRR. 





II 





I— II 





I 



IV 



Fast Pink 





III— IV 





III 





II— III 



IV 



Auramine II. 





I 





I 





IV 



I 



Magenta 





I 





I 





IV 



I 



Safranin 





II 





I 





III 



I 



Chrysophenine 





IV 





III 





IV 



IV 



Primuline 





II 





II— III 





IV 



IV 



Thiazine Red R. 





IV 





II— III 





II— III 



IV 



Primuline followed by Soda 





III 





IV 





IV 



IV 



,, developed with Phenol 





III 





IV 





IV 



IV 



,, /?-Napthol.. 





II— III 





III -IV 





IV 



IV 



Alizarine 





V 





IV 





IV 



IV 



