bathroom window frequently, top and bottom, for a few minutes, so as
to allow the air to escape out of doors instead of into other parts of
the house. A nursery, sitting room or school room, which has been
occupied by a number of people, should have the windows open, top and
bottom, while the occupants are at meals or elsewhere. A room which
has been occupied as a family sitting room during the evening should
be aired by the last member of the family to retire, in order to
prevent the impure air making its way through the house during the
night.

Special attention should be given to kitchen ventilation. In order to
prevent kitchen odors from penetrating through the other parts of the
house, it is necessary to have an outlet for steam and impure air near
the ceiling in the kitchen. If windows are placed so as to secure a
draft, they may be opened at the top only, when they will serve the
purpose admirably. There should be a ventilating flue in all kitchen
chimneys. In building a house, see that register ventilators are
placed in the kitchen on different walls, which may be closed in very
cold weather.


LAUNDRY WORK.

As the first essential of laundry work is a plentiful supply of water,
a word concerning that necessary article may not be out of place. Pure
water is a chemical compound of hydrogen and oxygen. It has great
absorbent and solvent powers, therefore pure water is seldom found.
The first fall of any shower is mixed with the impurities of the air;
among these may be acids, ammonia and carbon in the form of soot and
creosote. It is these impurities which cause the stain left when rain