Process for Dyeing Nankeen Colour . 
N. B. This operation is to cleanse the yarn from any 
oleaginous matter that may remain in it after boiling jjn 
the soap and dung liquors. 
Fifth Operation . 
To every gallon of iron liquor* add half a pound 
of ruddle or red chalk (the last the best) well pul- 
verized. 
Mix them well together, and let the liquor stand four 
hours, in order that the heavy particles may subside; 
then pour the clear liquor into the boiling pan, and bring 
it to such a degree of heat as a person can well bear his 
hand in it; divide the yarn into small parcels, about five 
hanks in each ; soak each parcel or handful very well in 
the above liquor, wring it, and lay it down on a clean 
deal board. When all the yarn is handed through the 
liquor, the last handful must be taken up and soaked in 
the liquor a second time, and every other handful in suc- 
cession till the whole is gone through ; then lay the yarn 
down in a tub, wherein there must be put a sufficient 
quantity of ley made from pot or pearl ashes, as will co- 
ver it about six inches. Let it lie in this state about two 
hours, then hand it over in the ley, wring it, and lay it 
down on a clear board. If it does not appear sufficient- 
ly deep in colour, this operation must be repeated till 
it has acquired a sufficient degree of darkness of co- 
lour : this done, it must be hung to dry as in former ope- 
rations. 
N. B. Any degree of red or yellow hue may be given 
to the yarn by increasing or diminishing the quantity of 
ruddle or red chalk. 
* Iron liquor is what the linen printers use- 
