“ The copal is not found at a greater depth in the ground than 4 ft., and it is seldom the diggers go deeper than about 3 ft. It occurs in pieces varying from the size of small pebbles up to masses of several ounces in weight, and occasionally lumps weighing 4 or 5 ℔ have been obtained. After being freed from foreign matter, the resin is submitted to various chemical operations for the purpose of clearing the “goose-skin,” the name given to the peculiar pitted-like surface possessed by fossil copal. ”