...arolina, on the 2d of July. When Mervine arrived at his post on the 8th of June, in the frigate Mississippi, he found a beginning already made, and by July he had a force of twenty-one vessels. Mervine 's first act after his arrival on the station was to publish a proclamation declaring, in the usual form, that an effective blockade of the port of Key West, Florida, has been established and will be...