CHAPTER XXIV.

_OIL TANNAGES, AND THE USE OF OILS AND FATS IN CURRYING._

Primitive use of oil in leather manufacture -- Chamoising and the production of washleather -- Manufacture of Moellon, or Dégras -- Sod oil -- Formaldehyde leathers -- “Crown” and “Helvetia” leathers -- Theory of oil leathers -- Processes of currying -- Theory of the stuffing process -- Hand-stuffing -- Drum-stuffing -- Stuffing of dry leather -- “Spueing” and its causes -- Fat-liquoring PAGE 378