Between the main land and Looe Island stands a rock, higher than the
surrounding ones, which is called Midmain or Magmain. Small vessels
frequently pass between the island and the main land, when the tide is
in. An imaginary line drawn from Looe Island westward, to a high rock
called horestone or orestone, about a mile distant, would form the
outer boundary of a piece of water called Portnadler Bay; from whence
the name is derived I know not.