Jacobs Cavern was peculiarly rich in flint knives and projectile points.
He was at once joined by the Percies; and Richard, abandoned by his friends, surrendered at Flint on the 19th of August.
The chief exports are oil-cake, flint, cod and Benedictine liqueur.
Flint, History of the Philosophy of History, i.
The crucibles or pots used for the production of optical glass very closely resemble those used in the manufacture of flint glass for other purposes; they are " covered " and the molten materials are thus protected from the action of the furnace gases by the interposition of a wall of fireclay, but as crucibles for optical glass are used for only one fusion and are then broken up, they are not made so thick and heavy as those used in flint-glass making, since the latter remain in the furnace for many weeks.