Boforú Corinlh, Mise., May 18. The Mobile Ádoertite and Register contain tbe follóingspeciiil: "Prxsacola, May 10. - At 12 o'olock last night Pensaoola navy-yard and tho furts were set on firo and destroyed. - When tho enemy discovofed what was going on. Fort Piokena oponed a íurious bombijrdiuent nnd képt it up duvinfí tho conflagratien but without doDg damage to any body. At Pensacola íi'.I pi'blio property osceptipg tho custom housn, wbich s naa pable of beinL? burned.was burued,but a Conlcdérate property has been savcd. The railroad track loading ont of the city tQwardu ifontgomery wns torn np.Tbia piorniqg u Federa! vaesel, with a ílag of truco, cíime up to the city, dcinanding a furrenjer. Mayor JJallbc refueed to comply wiïh he (Iemand, bnt as all the military forcé luyi left he had nn povvor to oppoee. Tho Federal QÍTicers replied that thcy would occupy the city to morrow, but that the inhitbitanU Deed not bc alarme:!."