Before revision: A record of primitive tanning bequeathed in the 12th-century CE by Abraham ben Isaac of Narbonne (1085–1158) mentions the tanning method employed in his day, in southern France, where the treatment of the raw hide by puering was still in use and done after the hairs of the animal were removed by lime in preparation for writing a Torah scroll and the hide had once again become stiff: After taking dry [sheep]-skins whose wool had been soaked [in lime water for removal], they leave them in the water for the duration of time needed for them to become soft [=soaking].
After revision: A record of primitive tanning bequeathed in the 12th-century CE by Abraham ben Isaac of Narbonne (1085–1158) mentions the tanning method employed in his day, in southern France, where the treatment of the rawhide by puering was still in use and done after the hairs of the animal were removed by lime in preparation for writing a Torah scroll and the hide had once again become stiff: After taking dry [sheep]-skins whose wool had been soaked [in lime water for removal], they leave them in the water for the duration of time needed for them to become soft [=soaking].