[Sidenote: Temperature]

The temperature is a matter of importance. It should not be decided
by guess-work, but a thermometer should be hung upon a wall at a
place equally removed from draft and from the source of heat. The
temperature for children during the first year should be about 70
degrees Fahrenheit during the day and not lower than 50 degrees at
night. Children who sleep with the mother will not be injured by a
temperature 5 to 20 degrees lower at night.

[Sidenote: Fresh Air]

It is important to provide means for the ingress of fresh air. It is
not sufficient to air the room from another room unless that other
room has in it an open window. Even then the nursery windows should
be opened wide from fifteen minutes to half an hour night and morning,
while the child is in another room; and this even when the weather is
at zero or below. It does not take long to warm up room that has been
aired. Perhaps the best means of obtaining the ingress of fresh air
without creating a draft upon the floor, where the baby spends so much
of his time, is to raise the window six inches at the top or bottom
and insert a board cut to fit the aperture.

[Sidenote: Daily Outing]

But no matter how well ventilated the nursery may be, all children
more than six weeks old need unmodified outside air, and need it every
day, no matter what the weather, unless they are sick.