In stormy weather and in winter time when children can not get outdoors they should get exercise indoors. In practically every home a room could be fitted up as a playroom or nursery. It need not be elaborate and could be a bedroom used for a playroom during the day. This room should be well lighted and not kept too warm. The right temperature is about 55° F. Since an abundance of light is necessary the room should not be on the north, for the direct rays of the sun are to be desired and some provision should be made to admit them. All drafts must be avoided, yet a sufficient amount of air must be admitted so as to prevent the air from becoming vitiated. The best method of accomplishing this is by means of ventilators placed in the windows. Occasionally the doors and windows should be opened and the room thoroughly aired. This should be done while the children are absent from the room. The furniture in the playroom should be substantial and of such a character that it can easily be cleaned and kept in a sanitary condition. Sleeping Rooms or Nurseries When it is possible in a home a room should be set aside for the nursery. This room should be well lighted, properly ventilated, and the heat and humidity should be carefully regulated. This room is to be the chief home of the infant for the first few months. Therefore it should meet the needs of the infant. It should receive the direct rays of the sun during the day. No processes, such as preparation of food, or washing of diapers, for example, should be permitted in this room. As far as possible gas plates, heaters, or gas lights should be avoided. The nursery should not be kept too warm. A temperature of 70° F. is proper during the day. During the first few weeks it should not be allowed to drop below 65° F. through the night. For children over two months of age the temperature during the night may go as low as 60° F. but not below 50° F.