The Principles of Leather Manufacture
CHAPTER XIV.
_ALUM TANNAGE, OR TAWING._
Nature of leather -- Mineral tanning substances -- Salts of aluminium -- Alums -- Aluminium sulphate -- Effect of salt in tawing -- Basic alumina solutions -- Tawing of skins for rugs -- Calf-kid manufacture -- Glove-kid -- Green leather and other combination tannages PAGE 184