The waters of the Bay of Volcano (in the island of Santorian, twenty-six leagues north of Candia,) have the singular property of cleansing the keels of ships. These waters have a fetid smell, and in calm weather, jets of a reddish kind of water are seen issuing from the bottom, as if caused by some secret volcanic agency. Hence it may be presumed that a strong current of sulphureted hydrogen gas is generated, which combines with the oxyd of copper of the sheathing, transforming it into a sulphuret ; and as it is the oxyd which cements the shells and weeds together, its transformation destroys their cohesion.