4130. Sudden alterations of heat and cold are dangerous especially to the young and the aged.
4131. Therefore, clothing, in quantity and quality, should be adapted to the alternations of night and day, and of the seasons.
4132. And therefore, also, drinking cold water when the body is hot, and hot tea and soups when cold, are productive of many evils.
4133. A bed-room, or nursery, ought to be spacious and lofty, dry, airy, and not inhabited during the day.
4134. No servants, if possible, should be suffered to sleep in the same room; and no linen or washed clothes should ever be hung there to dry, as they contaminate the air in which so considerable a portion of infantine life must be spent.