...phe Ducros's plantation, at the mouth of Bayou Bienvenu, which empties into Lake Borgne, with information to Maj.-Gen. Twiggs, that two fishermen had reported the arrival of two small war steamers in Lake Borgne , one carrying three guns, and the other a long pivot gun forward. The fishermen stated that the steamers lay off in the lake, and that night before last they sent two boats towards the mouth of. th...