FERRY BETWEEN VIRGINIA POINT ANDGALVESTON.*Positively not an hour's detention either side.IN addition to the steam boat, the heavy expense of which wiii onlj iuatify occasional trips for the present, we have just finished a very superior flat sail boat, competent to carry 30 head of Cattle or two Waggons and Teams at once which on their arri* val at Virginia Point, or on the arrival of but one paeseqger, the boat will forthwith convey them to Eagle Grove, 4 miles below he town. A flag staff is erected at the Grove, and, by raising tbe flag, the Boat will never exceed 20 to 50 minutes in crossing voer to receive passengers from the island, aug 24 SYDNOR 8TREET, Proprietors.