The citizens of a certain city were debating about the best material to use in the fortifications which were about to be erected for the greater security of the town. A Carpenter got up and advised the use of wood, which he said was readily procurable and easily worked. A Stone-mason objected to wood on the ground that it was so inflammable, and recommended stones instead. Then a Tanner got on his legs and said, "In my opinion there's nothing like leather."