The foliowing b;ieí dispatch annoaiiceJ to the whole country tbat th scaboard cilies and tlio navies tf the world noed no longer stand in awu of Ibe Merrimac : Fortress Monroe, May 11. ToJ. H.WaUon, Asslstant Secretirj "f : Tho Merrimac was bloivn up by lbo robels about 5 o'clock this morninff. She could not he coaxed into another contest with the Monitor, and could riot be induced to come out iiïto tnid channel and lot tho Vaoderbilt try to run lier down, and so whon the evaohatioo of Norfolk was deternvned on, her ofiicers and crow appliod a bIíjW match to her magazine, deserted her decks, and sho blew up, mak ng tho earth and water tretnblo for miles around. and so ends tho Murvimác, and so it is proved that our navy ünd arniy at and near Fortress Monroe have been unneceasarily oontrolled by her movoments for weeks. - Tho loss of the Merrimac and James River gunboats, with tho dajtrnetion of the rebol gunboata and rain8 below and at New Orleans, nnd n the recent briiliant eogbgeaient at Fort Wright, loaves the Contèdorate Stíiícs witli "uary " Navy, savo the Kaebville, which seems lo keep bobbing in and out at leisure. Eut soon Wilminglon, Charleston, and Mobile will be taken, and tlien her üüoupaiion ■A'ill be gone.