igorous exertion. If you open your windows, you will have the fresh
air; at the same time, you will enjoy the satisfaction of rendering your
hours of relaxation useful.

5. _Bathe frequently._ About five eighths of the food taken into the
stomach passes off by insensible perspiration, through the pores of the
skin; and with it is thrown off whatever impure matter is found in any
part of the system. When this perspiration is obstructed, general
derangement succeeds. It is chiefly to promote this that exercise is
required. But the matter thrown off is of a very poisonous nature; and
if not removed may he absorbed again into the system It also collects
upon the surface, and obstructs the regular discharge from the pores.
Frequent ablution is therefore highly necessary.

It is also essential to personal cleanliness. There is an _odor_ in this
insensible perspiration, which becomes offensive when the impurities
collecting upon the surface of the skin are not frequently removed. The
entire surface of the body should be washed every day; and if this is
done on rising in the morning, with cold water, and followed with brisk
rubbing with a coarse towel, it will furnish an effectual safeguard
against taking cold. This, however, should be remitted, when there is
any danger to be apprehended from the sudden application of cold; or
serious consequences may follow. Tepid water, with soap, should
occasionally be used at night, in order to remove all impurities from
the skin.

6. _Pay attention to the quality and quantity of food taken into the
stomach._ I know of nothing else which more necessarily affects both the
health of the body, and the vigor of the intellect. It is from this that
the blood is formed, and the continual waste of the system supplied. And
through the blood it acts on the brain, which is the seat of the
intellect. Yet, notwithstanding this, those whose peculiar province it
is to direct the preparation of our food, seldom inquire into the
chemical effect any such preparation may have upon the stomach, and,
through it, upon the whole system. Indeed, the business is generally
left to persons entirely ignorant of the principles which govern the
human constitution. It is no wonder, then, that a large proportion of
the culinary preparations of the present day are decidedly unfriendly to
it. But in relation to this matter, I cannot here be very particular. I
will only give some general rules, by which you may discover th