in being increased by the
association of that organ with the stomach, in a greater proportion than
the increased expenditure of it, or may be owing also to the stimulus of
new chyle received into the blood.

8. When the stomach and the heart and arteries are rendered torpid in
fevers, not only the cutaneous, cellular, and pulmonary absorbents are
excited to act with greater energy; but also their correspondent
capillaries and secerning vessels or glands, especially perhaps those of
the skin, are induced into more energetic action. Whence greater heat, a
greater secretion of perspirable matter, and of mucus; and a greater
absorption of them both, and of aerial moisture. These reverse sympathies
coincide with other animal facts, as in eruption of small pox on the face
and neck the feet become cold, while the face and neck are much flushed;
and in the hemiplagia, when one arm and leg become disobedient to volition,
the patient is perpetually moving the other. Which are well accounted for
by the accumulation of sensorial power in one part of an associated series
of actions, when less of it is expended by another part of it; and by a
deficiency of sensorial power in the second link of association, when too
much of it is expended by the first.

9. This doctrine of reverse sympathy enables us to account for that
difficult problem, why in continued fevers the increased action of the
cutaneous, cellular, and pulmonary capillaries proceeds without
interruption or return of cold fit; though perhaps with some exacerbations
and remissions; and that during a quarter, or half, or three quarters, or a
whole lunation; while at the same time the pulsations of the heart and
arteries are weaker than natural.

To this should be added the direct sympathy, which exists between the
peristaltic motions of the fibres of the stomach, and the pulsations of the
heart. And that the stomach has become torpid by the too great stimulus of
some poisonous or contagious matter; and this very intricate idea of
continued fever with feeble pulse is reduced to curious simplicity.

The direct sympathy of the stomach and heart and arteries not only appears
from the stronger and slower pulse of persons exhausted by fatigue, after
they have drank a glass of wine, and eaten a few mouthfuls; but appears
also from the exhibition of large doses of digitalis; when the patient
labours under great and incessant efforts to vomit, at the same time that
the actions of t