Thirteen Summer Cottages Burned. EXETER, N. H., Aug. 30.—Thirteen cottages, three barns and a number of smaller buildings at the Hedding camp grounds were burned, and five other cottages were badly damaged. A large number of trees which formed the beautiful camp ground grove were burned, and many others were cut down to stop the progress of the flames. The total loss is estimated at $15,000, only a small part of which is covered by insurance. The fire was discovered in Mrs. J. H. Harriman’s cottage on Broadhead avenue.