Sedatives are medicines which have the power of allaying the actions
of the systems generally, or of lessening the exercise of some
particular function.
Sialagogues are medicines which increase the flow of the saliva.
Stimulants are medicines capable of exciting the vital energy, whether
as exerted in sensation or motion.
Tonics are those medicines which increase the tone or healthy action,
or strength of the living system.
RULES FOR THE PRESERVATION OF HEALTH.
Pure atmospheric air is composed of nitrogen, oxygen and a very small
proportion of carbonic acid gas. Air once breathed has lost the chief
part of its oxygen, and acquired a proportionate increase of carbonic
acid gas. Therefore, health requires that we breathe the same air once
only.
The solid part of our bodies is continually wasting and requires to be
repaired by fresh substances. Therefore, food, which is to repair the
loss, should be taken with due regard to the exercise and waste of the
body.
The fluid part of our bodies also wastes constantly; there is but one
fluid in animals, which is water. Therefore, water only is necessary,
and no artifice can produce a better drink.
The fluid of our bodies is to the solid in proportion as nine to one.
Therefore, a like proportion should prevail in the total amount of
food taken.
Light exercises an important influence upon the growth and vigor of
animals and plants. Therefore, our dwellings should freely admit the
sun's rays.
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