succeeds the torpor of the first, as the absorbent
vessels of the lungs act more violently in consequence of the deficient
action of those of the stomach; and the skin at the commencement of
sickness is pale and cold, but in a little time becomes flushed and warm.

Thus we see in associate motions, which are rendered torpid by defect of
excitement, that sometimes a direct, and sometimes a reverse sympathy
succeeds in the subsequent links of the chain. But I believe where a torpor
of irritative or of the associate motions is caused by a previous too great
expenditure or exhaustion of the sensorial powers of irritation or
association, no increase of action in the subsequent link ever occurs, or
not till after a very long time.

Thus when the stomach becomes torpid by previous violent exertion, and
consequent exhaustion of the sensorial power of irritation, as after
intoxication with wine or opium, or after the exhibition of some violent
emetic drug, the torpor is communicated to the heart and arteries, as in
continued fevers with weak pulse. But where the torpor of the stomach is
produced from defective association, as in sea-sickness; or in the sickness
which occurs, when a stone stimulates the ureter; no torpor is then
communicated to the heart and arteries. For in the former case there is no
accumulation of sensorial power in the stomach, which was previously
exhausted by too great stimulus; but in the latter case the accumulation of
sensorial power in the stomach during its torpor is evinced by this
circumstance; that in sea-sickness the patients eat and drink voraciously
at intervals; and the pulse is generally not affected by the sickness
occasioned by a stone in the ureter. For the action of the stomach is then
lessened, and in consequence becomes retrograde, not owing to the
exhaustion of the sensorial power of irritation, but to the want of
excitement of the sensorial power of association; which is caused by the
defective action of the ureter, which becomes occasionally torpid by the
great stimulus of the stone it contains; or which is caused by the great
exhaustion of sensorial power by the pain; which affects the ureter without
exciting inflammation, or increased action of it.

9. Thus though the stomach after the great stimulus of intoxication from
excess of wine or opium will continue many hours without accumulation of
sensorial power, as appears from the patient's experiencing no appetite at
the intervals o