History of the Peloponnesian War

Having slit in two a great mast, they made hollow both the sides, and curiously set them together again in the form of a pipe. At the end of it in chains they hung a cauldron; and into the cauldron from the end of the mast they conveyed a snout of iron, having with iron also armed a great part of the rest of the wood.

They carried it to the wall, being far off, in carts, to that part where it was most made up with the matter of the vineyard and with wood.

And when it was to, they applied a pair of great bellows to the end next themselves, and blew. The blast, passing narrowly through into the cauldron, in which were coals of fire, brimstone, and pitch, raised an exceeding great flame, and set the wall on fire, so that no man being able to stand any longer on it, but abandoning the same and betaking themselves to flight, the wall was by that means taken.