1892.] 



NEW YORK ACADEMY OF SCIENCES. 



167 



Scarlet Lac Spirits. 

 Solution — 

 HNO3 

 HCl 



Sn . 

 Lac 

 Tartar 

 Spirits 



Boil 20 minutes, cool down ; enter wool, boil 

 night. 



1 



20 gms. 

 10 " 

 20 " 



6 " 



1.5 " 



0.5 gm. 



1.5 gms. 



hour ; soak over 



No. 2 (10008, 10069j. 



Dve 



'SnCl, 



Oxalic Acid 



HCl 

 Boil H hours. Enter wool cold 



. 1.5 



. 0.6 

 . O.G 

 q. s. 

 raise to boil slowlv. 



gms. 

 gm. 



Note well. — Add HCl, 4 or 5 drops, to about 25 ec. 

 this up with the dye and allow to stand over night. 



H,0 



rub 



Madder. 



Bed.— 1^0. I (10077). 

 Mordant first — 



AUSOJ3 . . . . 



Tartar ..... 

 Madder ..... 

 Begin dyeing at 40° C. ; raise to 80°-100° 

 continue 1 hour, wash, and dry. 



The shade is brownish-red, brightened by adding small amount 

 SnCl,, to dye-bath at close of operation ; better colors, 1-2 per cent, 

 weie-ht of Madder in Chalk. 



O.fi-1 

 0.5-0.8 



6.0-8.0 

 . during 



gm. 



gms. 

 1 hour. 



The best results are obtained at 80° C. 



bring out color. 



add 0.6 gm. 



Sumach to 



Orange. — No. 2 (separate bath). 

 SnCl 

 Tartar 

 Madder . 



0.8 gm. 

 0.4 " 

 6.0 gms. 



No. 2 a. Same (single bath). 

 SnCl, 



Brown. 



CuSO, . 

 Tartar . 

 Mordant and dye. 



0.4 gm. 

 0.2 " 



0.6 gm. 

 0.4 " 



