232. Again, dyeing a skin green

Take de-haired skins, as we said above, and process them first in dung, then in alum, and when they are taken out of the mordant, sew them into bladders. Then take a half pound of lulax and mix in 10 pounds of defrothed urine put it into the bladders, and process them thoroughly, letting in a little air, as was said above. Now do this continuously for 4 days; and after the 4 days pour the mixture into sheepskins, process them for 5 days, wash them and let them dry.

Citation Type  Leather Dye Recipe
Citation Year 800