On Friday morning last, between two and three o'clock, the Winnicumet House, at Boar's Head, owned and occupied by Thomas Leavitt, Esq., was discovered to be on fire, and within a brief period, the entire building was burnt to the ground. About one half of the furniture was saved, but in a damaged state. The fire was discovered in a small projection built upon the rear of the main house, and is supposed to have been the work of an incendiary. The total loss is estimated at $5,000, on which was an insurance on the furniture for $400, and on the buildings for $2,500 in the old Rockingham Mutual Co., in this town [Exeter]. The house, at the time of the disaster, was but partially filled with company, all of whom succeeded in making their escape.