March 29th. Nothing of importance is occurring now-a-days to mark one day from another. Yesterday, Capt. Bell, with the gunboats Kennebeck, Wissahickon and Winona, ascended the river to the forts, when Fort Jackson opened fire on them, and after firing about one hundred rounds at us our vessels hauled off. They discovered the position of the defenses, also a chain stretched across the river just below Forts Jackson and St. Philip, on eight schooners anchored between the forts. Our squadron is still gradually collecting. Capt. Porter’s mortar fleet is already here, but our large ships are not all over the bar.