Use alum mordant (see pages 67 to 68). Follow directions for dye method 

 2, substituting ferrous sulfate for potassium dichromate and acetic acid or 

 vinegar. 



Apple Bark (Pyrus malus or Malus sylvestris) 



Dark Yellow-Tan Wool : alum mordant 

 Colorfastness : fair to light, good to washing 

 Dye Method 1 or 4 (see pages 72 and 73) 



Brass Wool: chrome mordant 



Colorfastness: fair to light, good to washing 



Dye Method 1 (see page 72) 



Birch Bark, Yellow {Betula luted) 



The yellow birch bark used in these recipes is found in moist forests in 

 Northeastern United States and in some Midwestern States. 



Dark Yellow-Tan Wool : alum mordant 



Colorfastness: fair to light, good to washing 



Dye Method 3 (see page 72) 



Yellow-Brown Wool : alum mordant 



Colorfastness: good 



Dye Method 2 (see page 72) 



Chittam Bark {Rhamnus purshiana) 



Chittam bark is collected in Oregon and Washington States for use in 

 manufacturing the drug cascara sagrada. 



Dark Yellow-Tan Wool: chrome mordant 

 Colorfastness: fair 

 Dye Method 1 (see page 72), using only y^ peck of bark 



Light Brown Wool : alum mordant 



Colorfastness: good 



Dye Method 2 (see page 72), using only ].{ peck of bark 



Tan Cotton: alum-tannin-alum mordant 



Colorfastness: good 



Dye Method 2 (see page 72), using only y^ peck of bark 



Gray Cotton : alum-tannin-alum mordant 

 Colorfastness: fair 

 Dye Method 4 (see pages 72 and 73), using only }^ peck of bark 



73 



