"Leland, in his Itinerary... gives an account of his visit to . ...[H]e says, ..."One thynge I muche notyd in the hawle of Bolton, how chimeneys were conyened by tunnells made on the syds of the walls betwyxt the lights in the hawle, and by this means, and by no covers, is the smoke of the harthe in the hawle wondor strangely conveyed.""