Capture of more steamers.
--We learn by passengers who arrived in this city yesterday evening from the Rappahannock that on Tuesday last the party under Lieut. Wood, which recently captured two gunboats at the mouth of the Rappahannock, succeeded in capturing the fine bay steamer Louisiana, which used to run as a passenger boat between Norfolk and Baltimore. The prisoners found on board are stated to be on their road to Richmond. The transport Currituck, laden with coal and bacon, was also captured. There is a decided "raid" going on upon the Yankee steamers.