A French gentleman, M. Maratuch, has found by experiments, if three frames of wire are placed near the base of the chimney, about one foot apart, whilst no flame will pass through them, the draught will not be impaired. As most of the soot lodges on the uppermost wire, but little on the second, and none on the third, he suggests that a brush be applied daily to keep them clean, and the chimney will never want sweeping.