The Bark Franklin, which arrived at Holmes Hole on the 12th inst, from Jacksonville, Florida, had a slave on board, who secreted himself in the hold, when the vessel was loading. During the night, while the vessel was lying at anchor, he took a boat, and made good his escape to the shore; since which his whereabouts have been known only to a select few. He was from 25 to 30 years of age. The Franklin was bound to Hallowell, Me.