Chapter XIV

To escape the injuries arising from impure air it is necessary to attend to the following rules: To avoid the admission into closed apartments of air charged with any substance that offends the sense of smell. To avoid surcharging the air with vapour of water. To keep the temperature in every room as nearly as possible at the safe standard of 60° Fah. To take ample means of allowing air to escape from the room by every available outward draught, by the chimney flue especially. To admit air freely at all times, and, when a room is not in use and the external air is not charged with moisture, to allow the entrance of air from without through every window and door.