by increase of stimulus, as by bark, wine, opium,
and food, in small quantities frequently repeated. Or by renewing the
action of the stomach by slight electric shocks. Or by fomenting it
frequently with water heated to 96 or 100 degrees. Or lastly by exciting
its power of association with other parts of the system, as by a blister;
which succeeds best when the extremities are cool; or by swinging, as in
vertigo rotatoria.

If by the stimulus of the Peruvian bark on the fibres of the stomach, they
regain their due action, the heart and arteries also regain their due
action; as their sensorial power of association is now excited, and
expended as usual. And as there is then no accumulation of sensorial power
in the heart and arteries, the capillaries cease to act with too great
energy, and the fever is cured.

Thirdly. If the heart and arteries could be themselves stimulated into
greater action, although the stomach remained torpid, they might probably
by expending a greater quantity of the sensorial power of irritation,
prevent an accumulation of the sensorial power of association, (for these
may possibly be only different modes of action of the spirit of animation,)
and thus the too great action of the capillaries might be prevented and the
fever cease. This new mode of cure might possibly be accomplished, if the
patient was to breathe a gallon or two of pure or diluted oxygene gas
frequently in a day; which by passing through the moist membranes of the
lungs and uniting with the blood might render it more stimulant, and thus
excite the heart and arteries into greater action.

Fourthly. Greater energy might probably be given to the whole system, and
particularly to those parts which act too feebly in fevers, as the stomach
and the heart and arteries, if the action of the secerning vessels of the
brain could be increased in energy; this is probably one effect of all
those drugs, which when given in large quantity induce intoxication, as
wine and opium. And when given with great caution in small quantities
uniformly repeated, as from three drops to five of the tincture of opium,
but not more, every six hours, I believe they supply an efficacious
medicine in fevers with great arterial debility; and the more so, if the
Peruvian bark be exhibited alternately every six hours along with them.
There are other means of exciting the vessels of the brain into action; as
first by decreasing the stimulus of heat by temporary cold f