Professor Faraday has shown the chimney to possess very important functions in sanitary economy. Thus a parlor fire will consume forty pounds of coal in twelve hours, the combustion rendering 42,000 gallons of air unfit to support life. Not only is that large amount of deleterious product carried away, and rendered innoxious by the chimney, but five times that quantity of air is also carried up by the draft, and ventilation is thus effectually maintained. EXPENSIVE FKESHET—It is estimated that half a million dollars' worth of property has been destroyed in the western part of this State by the freshets of last week.