From Charleston.
Charleston, Oct. 27.
--Four monitors opened fire at 11 o'clock this morning on Fort Sumter, at a distance of one mile. The firing ceased between 3 and 4 o'clock this afternoon.
The firing from Gregg, Wagner, and the Centre Battery, on Sumter, Johnson, and Simpkins, has been very heavy during the day. At 11½ o'clock this morning the enemy fired three or four solid shot from the Centre Battery into the city.
Only one building (the Union Bank) was struck.
No person injured.
A report from Fort Johnson says that the enemy's gun firing on the city burst at the fifth discharge.
A dispatch from Sumter also states that one of the enemy's guns in the battery east of Gregg was bursted.
From 12 o'clock to 6 this afternoon 630 shots were fired at Sumter.
The following are the casualties of to-day: At Sumter, Lt. Brown, of the 12th Ga., mortally wounded; at Fort Johnson, privates Reeves killed and Davis wounded.
Our batteries steadily replied to the enemy's fire. 