Confederate boats Burned.
Augusta, April 30.
--The New Orleans Bulletin, of Friday, says that F. B. Renshaw, C. S. Navy, telegraphed from Point Alabache, on the 24th, that seven of our boats had been fired, after being overpowered by the enemy.
[The Navy Department received a similar dispatch last Saturday, but it is not known what boats are referred to.--Reporter.]