The Indus Civilization c9.9

c9.9

The thick, lustrous red slip already described was not only used for decorative purposes, but also served to seal the pores of the pottery, and so to prevent undue evaporation. As the larger jars were mainly used for storing water, some process had to be adopted to prevent waste, and large vessels have been found which appear to have been water-proofed inside with a preparation containing a bituminous basis.