not do any better than wood for windows, would be rather unsatisfactory
for ceilings, and impossible for doors. In other words, we could not build
a modern house from one kind of material only and we really need at least
four to carry out even a simple plan.

In a similar fashion, diet is constructed from fuel material,
body-building material and body-regulating material. No diet is perfect in
which these are not all represented. Now, foods are like sections of
houses. Some correspond to single parts, as a floor or a window or perhaps
a chimney; others to a house complete except for windows and roof; still
others to a house lacking only a door or two. It takes some thought to put
them together so that we shall have all kinds of parts without a great
many extra ones of certain kinds and not enough of others.

Milk is unique in that it comes nearest of all foods to being a complete
diet in itself. It is like the house with only a door missing. We could be
quite comfortable in such a house for a long time though we could make a
more complete diet by adding some graham bread or an apple or some
spinach.

We all associate milk with cows and cows with farms, but how closely is
milk associated with the farm table? Is it prized as the most valuable
food which the farm produces? Every drop should be used as food; and this
applies to skim milk, sour milk, and buttermilk as well as sweet milk. Do
we all use milk to the best advantage in the diet? Here are a few points
which it is well to bear in mind:

_Milk will take the place of meat._ The world is facing a meat famine. The
famine was on the way before the war began but it has approached with
tremendous speed this last year. Every cow killed and eaten means not only