is a trial which ships must undergo when suspected of a pestilential infection. It may be ordered by the king, with advice of the privy council, at such times, and under such regulations, as he judges proper. Ships ordered on quarantine must repair to the place appointed, and must continue there during the time prescribed (generally five weeks); and must have no intercourse with the shore, except for necessary provisions, which are conveyed with every possible precaution. When the time is expired, and the goods opened and exposed to the air as directed, if there be no appearance of infection they are admitted to port.

Ships infected with the pestilence must proceed to St Helen's Pool in the Scilly islands, and give notice of their situation to the customhouse officers, and wait till the king's pleasure be known.

Persons giving false information to avoid performing quarantine, or refusing to go to the place appointed, or escaping, also officers appointed to see quarantine performed, deserting their office, neglecting their duty, or giving a false certificate, suffer death as felons.

Goods from Turkey, or the Levant, may not be landed without license from the king, or certificate that they have been landed and aired at some foreign port. See Plague.