(B) Sodium Hydrosulfite Solution 

 Slowly add: Yz ounce sodium hydrosulfite to 1 quart of water 



Measure out )^ to Y^ cup for the dye solution. Keep the extra solution in 

 a stoppered bottle. 



The dye vat is made up as follows: 



Heat 4 gallons of water to 120° F. Add Y2 to )i cup of sodium hydrosulfite 

 solution (B), stir well and set aside for 10 minutes. Add 2 to 2)^ quarts of 

 indigo hydrosulfite solution (A). Stir gently and set aside for 20 minutes. 

 When the dye liquor is a clear, yellow liquid it is ready for the textile 

 material. 



First wet the cloth thoroughly and dip it in the dye vat. Stir it occasionally 

 during the 30 minutes it is in the vat, making certain that the material is 

 always well covered with dye. Without rinsing or squeezing out excess 

 moisture, hang it outside the dye vat. After exposing the material to the 

 air for 30 minutes, dip it in the vat for another 30 minutes. Repeat dipping 

 and airing until the desired color is obtained. After the last airing the 

 material should be rinsed thoroughly in clear water, washed in soapsuds, 

 and rinsed again. 



If the liquid in the vat turns blue, add more sodium hydrosulfite 

 solution (B), stir the liquid in the vat carefully and allow it to stand for 

 15 minutes before proceeding with the dye process. If repeated dippings 

 and airings fail to produce a noticeably darker blue in the material, the 

 dye vat needs more indigo hydrosulfite solution (A). After renewing the 

 dye vat, proceed as before. 



Iron Buff 



Buff Cotton : no mordant before dyeing 

 Golorfastness : fair 



1 pound unmordanted cotton 



6 ounces ferrous sulfate (copperas) 



6 ounces powdered soap 



Dissolve the ferrous sulfate in 4 to 4}^ gallons of water. Before immersing 

 the cotton, thoroughly wet it and squeeze out excess moisture. Stir for a 

 few minutes, remove from dyebath and drain. Dip the material into soap- 

 suds, stir and wring out. Repeat these steps three times, rinse and dry. 



Juniper Berries {Juniperus sp.) 



Juniper, also called red cedar, grows in many sections of the United 

 States, The bark, berries, and twigs are suitable for dyeing purposes. 

 Juniper berries will not dye cotton. 



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