CHAPTER IV. BEDROOM VENTILATION. The bedroom the most important room in

the house--necessity for proper ventilation--Extra allowance of sleep in hot climates--Crowding of articles in bedrooms condemned--Results of breathing vitiated air--Injuriously affects the heart as well as the lungs--The proper dimensions of a bedroom--Regulation of the ventilation--Mosquito nettings for summer months--Fresh air equally required in the cooler months