*A system of fire signals located atop mountains, which could be lit to signal Edo in the event of the incursion of a foreign ship into Nagasaki harbor, established in [[1809]] and never used, is officially abolished. | *A system of fire signals located atop mountains, which could be lit to signal Edo in the event of the incursion of a foreign ship into Nagasaki harbor, established in [[1809]] and never used, is officially abolished. |