CORK

the bark of a kind of oak tre found chiefly in Spain and Portoga The bark is not taken until the tree about 20 years old; after that a crop | taken every eight or ten years, and th tree attains an age of about 150 year The use of cork for floating purposes, an aS a non-conductor of heat, is very ok but it was not used to make stoppers fc bottles, etc., till the 15th reg is b [s. 109]