_At what age may a child go out of doors?_

In summer, when one week old; in spring and fall, usually at about one
month; in winter, when about three months old, on pleasant days, being
kept in, the sun and out of the wind.

_What are the best hours for airing out of doors?_

In summer and early autumn a child may be out almost any time between
seven in the morning and sunset; in winter and early spring, a young
child only between 10 or 11 A.M. and 3 P.M., although this depends
somewhat upon the climate. In New York and along the Atlantic coast
the early mornings are apt to be damp and the afternoons raw and
cloudy.

_On what kind of days should a baby not go out?_

In sharp winds, when the ground is covered with melting snow, and when
it is extremely cold. A child under four months old should not usually
go out if the thermometer is below freezing point; nor one under eight
months old if it is below 20° F.

_What are the most important things to be attended to when the child
is out in its carriage?_

To see that the wind never blows in its face, that its feet are
properly covered and warm, and that the sun is never allowed to shine
directly into its eyes when the child is either asleep or awake.