However the following
Caution, mentioned by Dr. _Lind_, ought to be observed, which is, not
to go into the cold Bath when overheated with Work or Liquor, or when
the Stomach is full, or when a critical Eruption, called the prickly
Heat, appears on the Skin[133].

[133] Dr. _Lind_ says, the Use of the cold Bath, either in
Tubs under the Forecastle, or to dip in the Sea early in the
Morning, has been found extremely beneficial in warm Weather
and hot Countries; and that he can affirm, from his own
Experience in hot Climates, that many Diarrhoeas and other
Complaints, the pure and sole Effect of an unusual and great
Heat (relaxing the System of the Solids, and occasioning a
Colliquation of the Animal Juices), have not only been cured
by cold Bathing; but their Return, and even the Attack of
such Diseases, effectually prevented by it. _Ibid._ p. 44,
&c.

When Men are seized with inflammatory Symptoms on entering into warm
Climates, they may be blooded freely: Afterwards they do not easily
bear such copious Evacuations, but rather require to have them made in
smaller Quantities, and very early and frequent, as Inflammations make
a rapid Progress in warm Countries. Dr. _Lind_ says, many
Practitioners disapprove of Blood-letting in the Countries lying under
the Torrid Zone, on a Supposition that the Blood is too much
dissolved; but he thinks that this Rule will admit of many Exceptions;
and that Sailors (_and consequently Soldiers_), being strong and
robust, and exposed to greater Vicissitudes of Heat and Cold, and more
Excesses, and other Accidents in general, bear freer Bleeding than any
other Set of People.

After some Time, the Diseases in these warm Climates tend to the
putrid Kind, and must be treated as such.

In all Countries, and in all Climates, great Care ought to be taken in
chusing the Ground on which Men are to encamp. Dry high Grounds,
exposed to the Winds, where there is a free Current of Air, and which
lie at a Distance from Marshes, stagnating Water, and large Woods, are
generally healthful in very different Climates[134]. But Places
situated low, where, on digging two or three Feet below the Surface of
the Earth, you come to Water[135], and marshy Grounds, and Places
surrounded with corrupt stagnating Water, are almost always the
contrary, and very unhealthful; as are often those Grounds which are
subject to be overflowed by large Rivers, and low Places cover