If Physiology has failed to teach a way to maintain perfect health some
of her hypotheses must be wrong.
If any of the hypotheses of Physiology are discredited any one of them
may be doubted.[5]
[Footnote 5: Since this was written, the then accepted standards of
human food requirements have not only been questioned but have been
discredited and disproved. The great importance of mouth-work in the
economics of digestion has been demonstrated and accepted.]