acid and one for bicarbonate of soda, and a pasteurizer. Later, a
double boiler for cooking cereals will be needed.

_What bottles are to be preferred?_

A cylindrical graduated bottle with a rather wide neck, so as to admit
of easy washing, and one which contains no angles or corners. A single
size holding eight ounces is quite sufficient for use during the first
year. All complicated bottles are bad, being difficult to clean. One
should have as many bottles in use as the child takes meals a day.

_How should bottles be cared for?_

As soon as they are emptied they should be rinsed with cold water and
allowed to stand filled with water to which a little bicarbonate of
soda has been added. Before the milk is put into them they should be
thoroughly washed with a bottle brush and hot soap-suds and then
placed for twenty minutes in boiling water.

_What sort of nipples should be used?_

Only simple straight nipples which slip over the neck of the bottle.
Those with a rubber or glass tube are too complicated and very
difficult to keep clean. Nipples made of black rubber are to be
preferred. The hole in the nipple should not be so large that the milk
will run in a stream, but just large enough for it to drop rapidly
when the bottle with the nipple attached is inverted.

_How should nipples be cared for?_