The philosophy of eating. By Albert J. Bellows, M.D.

FOOD IN ACTIVE LIFE.

101

his land, his horses, his cattle, and his pigs; but not
how to feed his children. He knows that fine flour is
not good for pigs, and he gives them the whole of the
grain, or perhaps takes out the bran and coarser part,
which contains food for muscles and brains, and gives
them to his pigs, while the fine flour, which contains
neither food for brain or muscle, he gives to his children. He separates also the milk, and gives his pigs
the skim-milk and buttermilk, in which are found all
the elements for muscle and brain, and gives his children the butter, which only heats them and makes them
inactive, without furnishing a particle of the nutriment
which they need.
The Amount and Proportion of Muscle-makino and
Heat-producing' Elements of Food in Active Employments.
We see by the preceding table that prisoners, without exercise, could not be sustained with an amount of
food short of four ounces nitrogenous food and thirteen
ounces carbonaceous; all short of that amount being
insufficient to supply the waste, and the remainder was
drawn from the body itself, constantly diminishing in
its weight; and that, whether the diminution was in the
nitrates or carbonates.
To supply four ounces nitrogen and thirteen ounces
carbon in the most concentrated food, requires of