A man would have adequate nourishment for a day, including
a sufficient supply of iron, if he were doing only moderate physical
labor, from one pint of milk, one and one-half pounds of whole wheat
bread, and three medium-sized apples. Beef juice is often used as a source
of iron for children and undoubtedly it is one which is palatable and
digestible, but it takes a quarter of a pound of beef to get a few
tablespoonfuls of juice, and a tablespoonful of juice would hardly contain
as much iron as one egg yolk; and it seems probable that the iron of the
egg yolk would be better utilized for the making of good red blood.
Meat is good fuel for the human machine if used in moderate amounts along
with other food. But meat is no better fuel than other food. An ordinary
lamb chop will furnish no more calories than a dish of oatmeal, a piece of
bread an inch thick and three inches square, a large apple or banana, an
egg, five ounces (five-eighths of a cup) of milk, or a tablespoonful of
peanut butter. The fatter meat is the higher its fuel value (providing the
fat is used for food). A tablespoonful of bacon fat or beef drippings has
the same fuel value as a tablespoonful of butter or lard, or as the lamb
chop mentioned above.
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