The C. S. Streamer Sumter.
--No vessel has rendered more effective service to the Confederate States than the war steamer Sumter. Several of her prizes were at Cienfuegos on the 13th ult., supposed to be waiting for instructions from Madrid as to their disposition. So the report, mentioned in the Havana correspondence of the New York Times, that these vessels had been given up and had sailed for the United States, is false. The Macon citizen is informed by a gentleman on board the Sumter, (now returning from Europe with a supply of arms, etc.,) that trains had been laid and magazines prepared, so that in the event of getting into close quarters with the enemy, with no probability of escape, the vessel will be blown up, and every man on board has determined to share her fate.