Where did "Wall Street" get its name?

In 1653, a wall was constructed on the northern part of the Dutch settlement of New Amsterdam to protect the colony from an attack from New England. The wall was made of 16-foot logs sunk four feet into the ground and sharpened at the top. The English did attack in 1664, and the wall was torn down in 1699. The street where the wall once stood was subsequently named "Wall Street."