From Charleston

Philadölphia, April 8. A private letter datad ofl Charleston, lst instant, says it ia reported Charleston hus heen evuuuutud by all the women and ohildreo Four ron ciada have been in Edisto River, Uventy miles tsouth ül here, for a week. Admiral Dupont will be here to-day, whon it is Baid the bombardment will begin., lt h reported the urmy will remain at Port Iioyal until after the bombardtnent. I thitife thís report probable, as the rebls have had time and opportunity to foriify the land approaches so as to make thern almost iinpregnable. Wd have been engaged for the last two days in hunghig chains to the siJcs of onr ves.sels so as to protect the machinery." WauhiDgton, April 8. Private letters just received from of-1 ficers attached to ihe Charleston expedition, writien on the evening of the departure of the fleet to attack that city, espressed themselves eonfident of success, and say such is the genernl ieeling among both oifioers and men. The Richmond Sentirte) of the 7th has tho following significant paragraph: "Yesterday marning eight Monitor iron-clads were off ihe bar at Charleston The brief but significant telegram whiuli was received early in the day, and published elsewhere, tèlla that the long expecti-d collision has probably corne off era this. The atorra so long prepareiï f i r Charleston has bnrst at last. We shall publish the resulta as we learn them. We await the issue with buoyant hope, but not without a Bolioitiide due to the important struggle. May Ileaven shióld Qharïeeton from tho rage of her eneraies and ours!"