producing, by their distention, the
varicose, or enlarged veins. Hence elastic bands should always be used
for these purposes.

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367-386. _Give the hygiene of the circulatory organs._ 367. What
effect will be produced on the body if it is deprived of blood? If the
blood is only lessened in quantity? 368. Why should the clothing be
worn loose? 369. What is said of dressing the neck? To what persons is
this remark applicable? 370. How are enlarged veins frequently
produced?

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371. _An equal temperature of all parts of the system promotes
health._ A chill on one portion of the body diminishes the size of
its circulating vessels, and the blood which should distend and
stimulate the chilled part, will accumulate in other organs. The
deficiency of blood in the chilled portion induces weakness, while the
superabundance of sanguineous fluid may cause disease in another
part of the system.

372. _The skin should be kept not only of an equal, but at its natural
temperature._ If the skin is not kept warm by adequate clothing, so
that chills shall not produce a contraction of the blood-vessels and a
consequent paleness, the blood will recede from the surface of the
body, and accumulate in the internal organs. Cleanliness of the skin
is likewise necessary, for the reason, that this condition favors the
free action of the cutaneous vessels.

_Observation._ When intending to ride in a cold day, wash the face,
hands, and feet, in cold water, and rub them smartly with a coarse
towel. This is far better to keep the extremities warm, than to take
spirits into the stomach.

373. _Exercise promotes the circulation of the blood._ As the action
of the muscles is one of the important agents which propel the blood
through the arteries and veins, daily and regular exercise of the
muscular system is required to sustain a vigorous circulation in the
extremities and skin, and also to maintain a healthy condition of the
system. The best stimulants to improve the sluggish circulation of an
indolent patient, whose skin is pale and whose extremities are cold,
are the union of vigorous muscular exercise with agreeable mental
action, and the systematic application to the skin of cold water,
attended with friction.

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371. Why should the temperature of the body be equal? 372. Why should
the skin be kept at its natural, as well as at an equal temperature?
What pra