It is just possible that during the lowest equinoctial tides the top of the orifice is uncovered.

This I shall be able to ascertain, as this is precisely the time they occur.

To-day, September 19, I could almost distinguish the summit of the hole under the water.

The day after to-morrow, if ever, it will be uncovered.
Very well then, if I cannot myself attempt to get through, may be a bottle thrown into the lagoon might be carried out during the last few minutes of the ebb.

And might not this bottle by chance--an ultra-providential chance, I must avow--be picked up by a ship passing near Back Cup?
Perhaps even it might be borne away by a friendly current and cast upon one of the Bermudan beaches.