"[Rumford] complains of the enormous waste of heat, and regrets that no means of saving it can be invented, in the face of the discoveries of both [Louis] Savot and [Nicholas] Gauger. Even his bevelled jambs for better reflecting the rays into the room had long since been recommended by Gauger. They were brought forward as quite new by Rumford. ...In speaking of the waste in unconsumed smoke... [Rumford] gives no way of consuming the smoke, or of alleviating the evil."