176 TRANSACTIONS OF THE [jUNE 6, 



Purple.— ^o. 10095, 10099. 

 Mordant the wool with 



SnCI^ 0.600 gm. 



Tartar 0.900 " 



HCl 2 or 3 drops. 



Boil for 1 hour, take out, and dye in a separate bath of 



Logwood ..... 1.5 gms. 



Distilled water . . . . q. s. 



5/jye.— No. 10096, 10097. 



Mordant for 1-1^ hours at 100° C. in bath of 



AUSOJ3 0.4 gm. 



Tartar 0.5 " 



Wash well and dye in separate bath of 



Chip Logwood .... 1.5-3.0 gms. 



Chalk 0.2-0.3 gm. 



for 1-11 hours at 100° C. 



Blue. — No. 10098 (using another mordant). 



K^Cr^O^ 0.3 gm. 



H^SO^ cone 0.1 gm. 



Same method. At the close of the operation add 0.5-1 per cent. 

 SnCl,. 



Brighest blues are dyed at 90° C. 



Black. — Iron-black No. 1. 



Mordant for 1^-2 hours in bath of 



FeSO, 0.4 gm. 



CuSO, 0.2 " 



Alum 0.2 " 



Argol 1.2 gms. 



Take out, wring, and let lie over night; dye 1^ hours at 100° 

 C. in 4.0-5.0 gms. Logwood. 



No. 2. Black. 



Boil wool 1 hour with decoction of 4.0-5.0 gms. Logwood and 

 0.5-1.0 gm. Fustic, lift, and cool bath ; add 0.4—0.6 gm. FeSO^ and 

 0.2 gm. CuSO^, re-enter wool, raise to 100° C. in | of an hour, and 

 boil ^ hour longer. 



. 0.3 gm. 

 . 0.1 " 

 . 0.4 " 

 .0.6 " 

 Wash, and dye in separate bath 1-1^ hours at 100° C. of 

 3.5-4.0 gms. Logwood and 0.5 gm. of old Fustic; finally pass 

 through a warm bath of 0.5 per cent KjCr^O.,, using Oxalic Acid. 

 We can recommend this bath as giving fine results. 



