Bark: Dye Method 1 



1 pound of wool or cotton 

 1 peck finely chopped bark 



Use alum or chrome mordant on wool, and alum or alum-tannin-alum 

 on cotton (see pages 67 to 69). Soak the bark overnight in 2 to 2)i gallons of 

 soft water. The following morning gradually heat this bath to boiling, 

 boil for 2 hours. Add hot water as necessary to maintain the original water 

 level. Strain the dye liquid twice through cheesecloth, then add cold water 

 to make a dyebath of 4 to 4}^ gallons. When the bath is cooled to lukewarm 

 (95° F.), immerse the material after first wetting it thoroughly and squeez- 

 ing out excess moisture. Heat the dyebath to boiling; boil for 30 minutes, 

 rinse and dry. 



Bark: Dye Method 2 



1 pound of wool or cotton 



1 peck finely chopped bark 



J-^ ounce potassium dichromate 



y^ ounce acetic acid, or 6 to 7 tablespoons vinegar 



Use alum mordant on wool, and alum or alum-tannin-alum on cotton 

 (see pages 67 to 69). Soak the bark overnight in 2 to 2Yi gallons of soft 

 water. The following morning heat this bath to boiling and continue to 

 boil for 2 hours. Add hot water as necessary to maintain the original water 

 level. Strain the dye liquid twice through cheesecloth then add cold water 

 to make a dyebath of 4 to 4)^ gallons. When the bath is cooled to lukewarm, 

 immerse the material after first rinsing thoroughly and squeezing out 

 excess moisture. Heat the dyebath to boiling and continue to boil for 30 

 minutes. 



Without rinsing, transfer the yarn or cloth to a boiling bath of potassium 

 dichromate and acetic acid dissolved in 4 gallons of soft water. Stir carefully 

 while boiling for 10 minutes, rinse and dry. 



Bark: Dye Method 3 

 1 pound wool 

 1 peck finely chopped bark 

 ],i ounce copper sulfate (blue vitriol) 

 }6 ounce acetic acid or 6 to 7 tablespoons vinegar 



Use alum or chrome mordant (see pages 67 to 68). Follow directions for 

 dye method 2, substituting copper sulfate for potassium dichromate. 



Bark: Dye Method 4 

 1 pound wool 

 1 peck finely chopped bark 

 y% ounce ferrous sulfate (copperas) 



72 



